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Finding the Fourth Proportional to 6,424.32, 8,859.52 and 5,480.48

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Solution

The fourth proportional to 6,424.32, 8,859.52 and 5,480.48 is: 7,557.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,424.32 : 8,859.52 = 5,480.48 : x
  2. Step 2: Convert to fraction form
    6,424.32/8,859.52 = 5,480.48/x
  3. Step 3: Cross multiply
    6,424.32x = 8,859.52 × 5,480.48
  4. Step 4: Simplify right side
    6,424.32x = 48,554,422.17
  5. Step 5: Solve for x
    x = 48,554,422.17/6,424.32
  6. Step 6: Final answer
    x = 7,557.91

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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.