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Finding the Fourth Proportional to 8,985.76, 12,400.02 and 5,006.67

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Solution

The fourth proportional to 8,985.76, 12,400.02 and 5,006.67 is: 6,909.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,985.76 : 12,400.02 = 5,006.67 : x
  2. Step 2: Convert to fraction form
    8,985.76/12,400.02 = 5,006.67/x
  3. Step 3: Cross multiply
    8,985.76x = 12,400.02 × 5,006.67
  4. Step 4: Simplify right side
    8,985.76x = 62,082,808.13
  5. Step 5: Solve for x
    x = 62,082,808.13/8,985.76
  6. Step 6: Final answer
    x = 6,909.02

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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.