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Finding the Fourth Proportional to 1,417.87, 2,126.81 and 540.17

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Solution

The fourth proportional to 1,417.87, 2,126.81 and 540.17 is: 810.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,417.87 : 2,126.81 = 540.17 : x
  2. Step 2: Convert to fraction form
    1,417.87/2,126.81 = 540.17/x
  3. Step 3: Cross multiply
    1,417.87x = 2,126.81 × 540.17
  4. Step 4: Simplify right side
    1,417.87x = 1,148,829.61
  5. Step 5: Solve for x
    x = 1,148,829.61/1,417.87
  6. Step 6: Final answer
    x = 810.25

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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.