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Finding the Fourth Proportional to 3,143.49, 4,715.24 and 1,680.63

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Solution

The fourth proportional to 3,143.49, 4,715.24 and 1,680.63 is: 2,520.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,143.49 : 4,715.24 = 1,680.63 : x
  2. Step 2: Convert to fraction form
    3,143.49/4,715.24 = 1,680.63/x
  3. Step 3: Cross multiply
    3,143.49x = 4,715.24 × 1,680.63
  4. Step 4: Simplify right side
    3,143.49x = 7,924,565.40
  5. Step 5: Solve for x
    x = 7,924,565.40/3,143.49
  6. Step 6: Final answer
    x = 2,520.95

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Double scale
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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.