Home / 7,215,356.46-9,957,072.51-3,952,140.78

Finding the Fourth Proportional to 7,215,356.46, 9,957,072.51 and 3,952,140.78

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Solution

The fourth proportional to 7,215,356.46, 9,957,072.51 and 3,952,140.78 is: 5,453,888.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,215,356.46 : 9,957,072.51 = 3,952,140.78 : x
  2. Step 2: Convert to fraction form
    7,215,356.46/9,957,072.51 = 3,952,140.78/x
  3. Step 3: Cross multiply
    7,215,356.46x = 9,957,072.51 × 3,952,140.78
  4. Step 4: Simplify right side
    7,215,356.46x = 39,351,752,316,187.95
  5. Step 5: Solve for x
    x = 39,351,752,316,187.95/7,215,356.46
  6. Step 6: Final answer
    x = 5,453,888.87

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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.