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Finding the Fourth Proportional to 8,973.66, 12,379.05 and 5,245.50

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Solution

The fourth proportional to 8,973.66, 12,379.05 and 5,245.50 is: 7,236.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,973.66 : 12,379.05 = 5,245.50 : x
  2. Step 2: Convert to fraction form
    8,973.66/12,379.05 = 5,245.50/x
  3. Step 3: Cross multiply
    8,973.66x = 12,379.05 × 5,245.50
  4. Step 4: Simplify right side
    8,973.66x = 64,934,306.78
  5. Step 5: Solve for x
    x = 64,934,306.78/8,973.66
  6. Step 6: Final answer
    x = 7,236.10

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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.