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Finding the Fourth Proportional to 6,439.52, 8,865.11 and 5,775.23

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Solution

The fourth proportional to 6,439.52, 8,865.11 and 5,775.23 is: 7,950.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,439.52 : 8,865.11 = 5,775.23 : x
  2. Step 2: Convert to fraction form
    6,439.52/8,865.11 = 5,775.23/x
  3. Step 3: Cross multiply
    6,439.52x = 8,865.11 × 5,775.23
  4. Step 4: Simplify right side
    6,439.52x = 51,198,085.83
  5. Step 5: Solve for x
    x = 51,198,085.83/6,439.52
  6. Step 6: Final answer
    x = 7,950.60

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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.