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Finding the Fourth Proportional to 8,229.79, 12,281.40 and 7,354.99

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Solution

The fourth proportional to 8,229.79, 12,281.40 and 7,354.99 is: 10,975.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,229.79 : 12,281.40 = 7,354.99 : x
  2. Step 2: Convert to fraction form
    8,229.79/12,281.40 = 7,354.99/x
  3. Step 3: Cross multiply
    8,229.79x = 12,281.40 × 7,354.99
  4. Step 4: Simplify right side
    8,229.79x = 90,329,574.19
  5. Step 5: Solve for x
    x = 90,329,574.19/8,229.79
  6. Step 6: Final answer
    x = 10,975.93

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Half scale
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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.