Home / 6,387.78-8,814.99-3,555.04

Finding the Fourth Proportional to 6,387.78, 8,814.99 and 3,555.04

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Solution

The fourth proportional to 6,387.78, 8,814.99 and 3,555.04 is: 4,905.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,387.78 : 8,814.99 = 3,555.04 : x
  2. Step 2: Convert to fraction form
    6,387.78/8,814.99 = 3,555.04/x
  3. Step 3: Cross multiply
    6,387.78x = 8,814.99 × 3,555.04
  4. Step 4: Simplify right side
    6,387.78x = 31,337,642.05
  5. Step 5: Solve for x
    x = 31,337,642.05/6,387.78
  6. Step 6: Final answer
    x = 4,905.87

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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.