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Finding the Fourth Proportional to 8,641.44, 12,937.95 and 4,678.47

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Solution

The fourth proportional to 8,641.44, 12,937.95 and 4,678.47 is: 7,004.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,641.44 : 12,937.95 = 4,678.47 : x
  2. Step 2: Convert to fraction form
    8,641.44/12,937.95 = 4,678.47/x
  3. Step 3: Cross multiply
    8,641.44x = 12,937.95 × 4,678.47
  4. Step 4: Simplify right side
    8,641.44x = 60,529,810.94
  5. Step 5: Solve for x
    x = 60,529,810.94/8,641.44
  6. Step 6: Final answer
    x = 7,004.60

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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.