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Finding the Fourth Proportional to 7,291.80, 10,937.70 and 4,829.40

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Solution

The fourth proportional to 7,291.80, 10,937.70 and 4,829.40 is: 7,244.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,291.80 : 10,937.70 = 4,829.40 : x
  2. Step 2: Convert to fraction form
    7,291.80/10,937.70 = 4,829.40/x
  3. Step 3: Cross multiply
    7,291.80x = 10,937.70 × 4,829.40
  4. Step 4: Simplify right side
    7,291.80x = 52,822,528.38
  5. Step 5: Solve for x
    x = 52,822,528.38/7,291.80
  6. Step 6: Final answer
    x = 7,244.10

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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.