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Finding the Fourth Proportional to 8,697.85, 12,002.96 and 4,869.50

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Solution

The fourth proportional to 8,697.85, 12,002.96 and 4,869.50 is: 6,719.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,697.85 : 12,002.96 = 4,869.50 : x
  2. Step 2: Convert to fraction form
    8,697.85/12,002.96 = 4,869.50/x
  3. Step 3: Cross multiply
    8,697.85x = 12,002.96 × 4,869.50
  4. Step 4: Simplify right side
    8,697.85x = 58,448,329.36
  5. Step 5: Solve for x
    x = 58,448,329.36/8,697.85
  6. Step 6: Final answer
    x = 6,719.86

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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.