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Finding the Fourth Proportional to 5,479.66, 7,565.88 and 4,947.49

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Solution

The fourth proportional to 5,479.66, 7,565.88 and 4,947.49 is: 6,831.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,479.66 : 7,565.88 = 4,947.49 : x
  2. Step 2: Convert to fraction form
    5,479.66/7,565.88 = 4,947.49/x
  3. Step 3: Cross multiply
    5,479.66x = 7,565.88 × 4,947.49
  4. Step 4: Simplify right side
    5,479.66x = 37,432,115.64
  5. Step 5: Solve for x
    x = 37,432,115.64/5,479.66
  6. Step 6: Final answer
    x = 6,831.10

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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.