Home / 8,070.65-12,105.90-4,781.37

Finding the Fourth Proportional to 8,070.65, 12,105.90 and 4,781.37

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Solution

The fourth proportional to 8,070.65, 12,105.90 and 4,781.37 is: 7,172.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,070.65 : 12,105.90 = 4,781.37 : x
  2. Step 2: Convert to fraction form
    8,070.65/12,105.90 = 4,781.37/x
  3. Step 3: Cross multiply
    8,070.65x = 12,105.90 × 4,781.37
  4. Step 4: Simplify right side
    8,070.65x = 57,882,787.08
  5. Step 5: Solve for x
    x = 57,882,787.08/8,070.65
  6. Step 6: Final answer
    x = 7,172.02

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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.