Home / 1,575.19-2,173.35-1,261.09

Finding the Fourth Proportional to 1,575.19, 2,173.35 and 1,261.09

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Solution

The fourth proportional to 1,575.19, 2,173.35 and 1,261.09 is: 1,739.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,575.19 : 2,173.35 = 1,261.09 : x
  2. Step 2: Convert to fraction form
    1,575.19/2,173.35 = 1,261.09/x
  3. Step 3: Cross multiply
    1,575.19x = 2,173.35 × 1,261.09
  4. Step 4: Simplify right side
    1,575.19x = 2,740,789.95
  5. Step 5: Solve for x
    x = 2,740,789.95/1,575.19
  6. Step 6: Final answer
    x = 1,739.97

Related Problems

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Half scale
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Double scale
Find fourth proportional to 1,576.19, 2,174.73 and 1,262.09
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.