Home / 8,575.40-12,870.30-3,902.60

Finding the Fourth Proportional to 8,575.40, 12,870.30 and 3,902.60

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Solution

The fourth proportional to 8,575.40, 12,870.30 and 3,902.60 is: 5,857.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,575.40 : 12,870.30 = 3,902.60 : x
  2. Step 2: Convert to fraction form
    8,575.40/12,870.30 = 3,902.60/x
  3. Step 3: Cross multiply
    8,575.40x = 12,870.30 × 3,902.60
  4. Step 4: Simplify right side
    8,575.40x = 50,227,632.78
  5. Step 5: Solve for x
    x = 50,227,632.78/8,575.40
  6. Step 6: Final answer
    x = 5,857.18

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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.