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Finding the Fourth Proportional to 3,605.02, 5,407.72 and 1,140.10

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Solution

The fourth proportional to 3,605.02, 5,407.72 and 1,140.10 is: 1,710.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,605.02 : 5,407.72 = 1,140.10 : x
  2. Step 2: Convert to fraction form
    3,605.02/5,407.72 = 1,140.10/x
  3. Step 3: Cross multiply
    3,605.02x = 5,407.72 × 1,140.10
  4. Step 4: Simplify right side
    3,605.02x = 6,165,341.57
  5. Step 5: Solve for x
    x = 6,165,341.57/3,605.02
  6. Step 6: Final answer
    x = 1,710.21

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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.