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Finding the Fourth Proportional to 4,879.28, 6,734.40 and 3,307.88

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Solution

The fourth proportional to 4,879.28, 6,734.40 and 3,307.88 is: 4,565.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,879.28 : 6,734.40 = 3,307.88 : x
  2. Step 2: Convert to fraction form
    4,879.28/6,734.40 = 3,307.88/x
  3. Step 3: Cross multiply
    4,879.28x = 6,734.40 × 3,307.88
  4. Step 4: Simplify right side
    4,879.28x = 22,276,587.07
  5. Step 5: Solve for x
    x = 22,276,587.07/4,879.28
  6. Step 6: Final answer
    x = 4,565.55

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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.