Home / 8,240.87-11,359.10-6,445.17

Finding the Fourth Proportional to 8,240.87, 11,359.10 and 6,445.17

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Solution

The fourth proportional to 8,240.87, 11,359.10 and 6,445.17 is: 8,883.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,240.87 : 11,359.10 = 6,445.17 : x
  2. Step 2: Convert to fraction form
    8,240.87/11,359.10 = 6,445.17/x
  3. Step 3: Cross multiply
    8,240.87x = 11,359.10 × 6,445.17
  4. Step 4: Simplify right side
    8,240.87x = 73,211,346.66
  5. Step 5: Solve for x
    x = 73,211,346.66/8,240.87
  6. Step 6: Final answer
    x = 8,883.93

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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.