Home / 6,387.18-8,814.86-3,555.55

Finding the Fourth Proportional to 6,387.18, 8,814.86 and 3,555.55

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Solution

The fourth proportional to 6,387.18, 8,814.86 and 3,555.55 is: 4,906.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,387.18 : 8,814.86 = 3,555.55 : x
  2. Step 2: Convert to fraction form
    6,387.18/8,814.86 = 3,555.55/x
  3. Step 3: Cross multiply
    6,387.18x = 8,814.86 × 3,555.55
  4. Step 4: Simplify right side
    6,387.18x = 31,341,675.47
  5. Step 5: Solve for x
    x = 31,341,675.47/6,387.18
  6. Step 6: Final answer
    x = 4,906.97

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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.