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Finding the Fourth Proportional to 8,598.60, 12,881.88 and 7,220.88

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Solution

The fourth proportional to 8,598.60, 12,881.88 and 7,220.88 is: 10,817.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,598.60 : 12,881.88 = 7,220.88 : x
  2. Step 2: Convert to fraction form
    8,598.60/12,881.88 = 7,220.88/x
  3. Step 3: Cross multiply
    8,598.60x = 12,881.88 × 7,220.88
  4. Step 4: Simplify right side
    8,598.60x = 93,018,509.65
  5. Step 5: Solve for x
    x = 93,018,509.65/8,598.60
  6. Step 6: Final answer
    x = 10,817.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.