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Finding the Fourth Proportional to 8,698.08, 12,000.16 and 5,715.52

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Solution

The fourth proportional to 8,698.08, 12,000.16 and 5,715.52 is: 7,885.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,698.08 : 12,000.16 = 5,715.52 : x
  2. Step 2: Convert to fraction form
    8,698.08/12,000.16 = 5,715.52/x
  3. Step 3: Cross multiply
    8,698.08x = 12,000.16 × 5,715.52
  4. Step 4: Simplify right side
    8,698.08x = 68,587,154.48
  5. Step 5: Solve for x
    x = 68,587,154.48/8,698.08
  6. Step 6: Final answer
    x = 7,885.32

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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.