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Finding the Fourth Proportional to 8,598.64, 12,880.68 and 4,486

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Solution

The fourth proportional to 8,598.64, 12,880.68 and 4,486 is: 6,719.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,598.64 : 12,880.68 = 4,486 : x
  2. Step 2: Convert to fraction form
    8,598.64/12,880.68 = 4,486/x
  3. Step 3: Cross multiply
    8,598.64x = 12,880.68 × 4,486
  4. Step 4: Simplify right side
    8,598.64x = 57,782,730.48
  5. Step 5: Solve for x
    x = 57,782,730.48/8,598.64
  6. Step 6: Final answer
    x = 6,719.98

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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.