Home / 1,127.08-1,689.18-607.29

Finding the Fourth Proportional to 1,127.08, 1,689.18 and 607.29

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Solution

The fourth proportional to 1,127.08, 1,689.18 and 607.29 is: 910.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,127.08 : 1,689.18 = 607.29 : x
  2. Step 2: Convert to fraction form
    1,127.08/1,689.18 = 607.29/x
  3. Step 3: Cross multiply
    1,127.08x = 1,689.18 × 607.29
  4. Step 4: Simplify right side
    1,127.08x = 1,025,822.12
  5. Step 5: Solve for x
    x = 1,025,822.12/1,127.08
  6. Step 6: Final answer
    x = 910.16

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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.