Home / 6,591.60-9,875.40-3,121.20

Finding the Fourth Proportional to 6,591.60, 9,875.40 and 3,121.20

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Solution

The fourth proportional to 6,591.60, 9,875.40 and 3,121.20 is: 4,676.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,591.60 : 9,875.40 = 3,121.20 : x
  2. Step 2: Convert to fraction form
    6,591.60/9,875.40 = 3,121.20/x
  3. Step 3: Cross multiply
    6,591.60x = 9,875.40 × 3,121.20
  4. Step 4: Simplify right side
    6,591.60x = 30,823,098.48
  5. Step 5: Solve for x
    x = 30,823,098.48/6,591.60
  6. Step 6: Final answer
    x = 4,676.12

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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.