Home / 1,246.62-1,869.93-515.40

Finding the Fourth Proportional to 1,246.62, 1,869.93 and 515.40

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Solution

The fourth proportional to 1,246.62, 1,869.93 and 515.40 is: 773.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,246.62 : 1,869.93 = 515.40 : x
  2. Step 2: Convert to fraction form
    1,246.62/1,869.93 = 515.40/x
  3. Step 3: Cross multiply
    1,246.62x = 1,869.93 × 515.40
  4. Step 4: Simplify right side
    1,246.62x = 963,761.92
  5. Step 5: Solve for x
    x = 963,761.92/1,246.62
  6. Step 6: Final answer
    x = 773.10

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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.