Home / 8,649.60-12,984-3,459.12

Finding the Fourth Proportional to 8,649.60, 12,984 and 3,459.12

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Solution

The fourth proportional to 8,649.60, 12,984 and 3,459.12 is: 5,192.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,649.60 : 12,984 = 3,459.12 : x
  2. Step 2: Convert to fraction form
    8,649.60/12,984 = 3,459.12/x
  3. Step 3: Cross multiply
    8,649.60x = 12,984 × 3,459.12
  4. Step 4: Simplify right side
    8,649.60x = 44,913,214.08
  5. Step 5: Solve for x
    x = 44,913,214.08/8,649.60
  6. Step 6: Final answer
    x = 5,192.52

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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.