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Finding the Fourth Proportional to 8,878.68, 12,247.16 and 5,690.92

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Solution

The fourth proportional to 8,878.68, 12,247.16 and 5,690.92 is: 7,850.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,878.68 : 12,247.16 = 5,690.92 : x
  2. Step 2: Convert to fraction form
    8,878.68/12,247.16 = 5,690.92/x
  3. Step 3: Cross multiply
    8,878.68x = 12,247.16 × 5,690.92
  4. Step 4: Simplify right side
    8,878.68x = 69,697,607.79
  5. Step 5: Solve for x
    x = 69,697,607.79/8,878.68
  6. Step 6: Final answer
    x = 7,850.00

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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.