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Finding the Fourth Proportional to 8,695.92, 12,000.84 and 4,919.28

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Solution

The fourth proportional to 8,695.92, 12,000.84 and 4,919.28 is: 6,788.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,695.92 : 12,000.84 = 4,919.28 : x
  2. Step 2: Convert to fraction form
    8,695.92/12,000.84 = 4,919.28/x
  3. Step 3: Cross multiply
    8,695.92x = 12,000.84 × 4,919.28
  4. Step 4: Simplify right side
    8,695.92x = 59,035,492.20
  5. Step 5: Solve for x
    x = 59,035,492.20/8,695.92
  6. Step 6: Final answer
    x = 6,788.87

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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.