Home / 1,640.20-2,460.30-1,569.10

Finding the Fourth Proportional to 1,640.20, 2,460.30 and 1,569.10

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Solution

The fourth proportional to 1,640.20, 2,460.30 and 1,569.10 is: 2,353.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,640.20 : 2,460.30 = 1,569.10 : x
  2. Step 2: Convert to fraction form
    1,640.20/2,460.30 = 1,569.10/x
  3. Step 3: Cross multiply
    1,640.20x = 2,460.30 × 1,569.10
  4. Step 4: Simplify right side
    1,640.20x = 3,860,456.73
  5. Step 5: Solve for x
    x = 3,860,456.73/1,640.20
  6. Step 6: Final answer
    x = 2,353.65

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Similar ratio
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1.5x scale

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.