Home / 1,637.31-2,455.11-712.38

Finding the Fourth Proportional to 1,637.31, 2,455.11 and 712.38

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Solution

The fourth proportional to 1,637.31, 2,455.11 and 712.38 is: 1,068.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,637.31 : 2,455.11 = 712.38 : x
  2. Step 2: Convert to fraction form
    1,637.31/2,455.11 = 712.38/x
  3. Step 3: Cross multiply
    1,637.31x = 2,455.11 × 712.38
  4. Step 4: Simplify right side
    1,637.31x = 1,748,971.26
  5. Step 5: Solve for x
    x = 1,748,971.26/1,637.31
  6. Step 6: Final answer
    x = 1,068.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.