Home / 8,765.31-12,097.20-4,989.40

Finding the Fourth Proportional to 8,765.31, 12,097.20 and 4,989.40

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Solution

The fourth proportional to 8,765.31, 12,097.20 and 4,989.40 is: 6,885.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,765.31 : 12,097.20 = 4,989.40 : x
  2. Step 2: Convert to fraction form
    8,765.31/12,097.20 = 4,989.40/x
  3. Step 3: Cross multiply
    8,765.31x = 12,097.20 × 4,989.40
  4. Step 4: Simplify right side
    8,765.31x = 60,357,684.25
  5. Step 5: Solve for x
    x = 60,357,684.25/8,765.31
  6. Step 6: Final answer
    x = 6,885.97

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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.