Home / 6,278.31-8,663.78-3,445.61

Finding the Fourth Proportional to 6,278.31, 8,663.78 and 3,445.61

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Solution

The fourth proportional to 6,278.31, 8,663.78 and 3,445.61 is: 4,754.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,278.31 : 8,663.78 = 3,445.61 : x
  2. Step 2: Convert to fraction form
    6,278.31/8,663.78 = 3,445.61/x
  3. Step 3: Cross multiply
    6,278.31x = 8,663.78 × 3,445.61
  4. Step 4: Simplify right side
    6,278.31x = 29,851,989.78
  5. Step 5: Solve for x
    x = 29,851,989.78/6,278.31
  6. Step 6: Final answer
    x = 4,754.78

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1.5x scale

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.