Home / 7,167,985.20-9,891,815.22-3,948,721.20

Finding the Fourth Proportional to 7,167,985.20, 9,891,815.22 and 3,948,721.20

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Solution

The fourth proportional to 7,167,985.20, 9,891,815.22 and 3,948,721.20 is: 5,449,232.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,167,985.20 : 9,891,815.22 = 3,948,721.20 : x
  2. Step 2: Convert to fraction form
    7,167,985.20/9,891,815.22 = 3,948,721.20/x
  3. Step 3: Cross multiply
    7,167,985.20x = 9,891,815.22 × 3,948,721.20
  4. Step 4: Simplify right side
    7,167,985.20x = 39,060,020,465,696.67
  5. Step 5: Solve for x
    x = 39,060,020,465,696.67/7,167,985.20
  6. Step 6: Final answer
    x = 5,449,232.86

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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.