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Finding the Fourth Proportional to 7,841.04, 10,819.92 and 4,391.28

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Solution

The fourth proportional to 7,841.04, 10,819.92 and 4,391.28 is: 6,059.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,841.04 : 10,819.92 = 4,391.28 : x
  2. Step 2: Convert to fraction form
    7,841.04/10,819.92 = 4,391.28/x
  3. Step 3: Cross multiply
    7,841.04x = 10,819.92 × 4,391.28
  4. Step 4: Simplify right side
    7,841.04x = 47,513,298.30
  5. Step 5: Solve for x
    x = 47,513,298.30/7,841.04
  6. Step 6: Final answer
    x = 6,059.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.