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Finding the Fourth Proportional to 2,507.82, 3,460.22 and 1,985.36

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Solution

The fourth proportional to 2,507.82, 3,460.22 and 1,985.36 is: 2,739.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,507.82 : 3,460.22 = 1,985.36 : x
  2. Step 2: Convert to fraction form
    2,507.82/3,460.22 = 1,985.36/x
  3. Step 3: Cross multiply
    2,507.82x = 3,460.22 × 1,985.36
  4. Step 4: Simplify right side
    2,507.82x = 6,869,782.38
  5. Step 5: Solve for x
    x = 6,869,782.38/2,507.82
  6. Step 6: Final answer
    x = 2,739.34

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Double scale
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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.