Home / 1,084.16-1,487.20-1,072.28

Finding the Fourth Proportional to 1,084.16, 1,487.20 and 1,072.28

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Solution

The fourth proportional to 1,084.16, 1,487.20 and 1,072.28 is: 1,470.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,084.16 : 1,487.20 = 1,072.28 : x
  2. Step 2: Convert to fraction form
    1,084.16/1,487.20 = 1,072.28/x
  3. Step 3: Cross multiply
    1,084.16x = 1,487.20 × 1,072.28
  4. Step 4: Simplify right side
    1,084.16x = 1,594,694.82
  5. Step 5: Solve for x
    x = 1,594,694.82/1,084.16
  6. Step 6: Final answer
    x = 1,470.90

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.