Home / 1,262.38-1,743.10-1,129.36

Finding the Fourth Proportional to 1,262.38, 1,743.10 and 1,129.36

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Solution

The fourth proportional to 1,262.38, 1,743.10 and 1,129.36 is: 1,559.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,262.38 : 1,743.10 = 1,129.36 : x
  2. Step 2: Convert to fraction form
    1,262.38/1,743.10 = 1,129.36/x
  3. Step 3: Cross multiply
    1,262.38x = 1,743.10 × 1,129.36
  4. Step 4: Simplify right side
    1,262.38x = 1,968,587.42
  5. Step 5: Solve for x
    x = 1,968,587.42/1,262.38
  6. Step 6: Final answer
    x = 1,559.43

Related Problems

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Half scale
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Double scale
Find fourth proportional to 1,263.38, 1,744.48 and 1,130.36
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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.