Home / 3,712.80-5,569.30-1,520

Finding the Fourth Proportional to 3,712.80, 5,569.30 and 1,520

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Solution

The fourth proportional to 3,712.80, 5,569.30 and 1,520 is: 2,280.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,712.80 : 5,569.30 = 1,520 : x
  2. Step 2: Convert to fraction form
    3,712.80/5,569.30 = 1,520/x
  3. Step 3: Cross multiply
    3,712.80x = 5,569.30 × 1,520
  4. Step 4: Simplify right side
    3,712.80x = 8,465,336
  5. Step 5: Solve for x
    x = 8,465,336/3,712.80
  6. Step 6: Final answer
    x = 2,280.04

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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.