Home / 7,449.12-10,278.12-4,618.80

Finding the Fourth Proportional to 7,449.12, 10,278.12 and 4,618.80

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Solution

The fourth proportional to 7,449.12, 10,278.12 and 4,618.80 is: 6,372.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,449.12 : 10,278.12 = 4,618.80 : x
  2. Step 2: Convert to fraction form
    7,449.12/10,278.12 = 4,618.80/x
  3. Step 3: Cross multiply
    7,449.12x = 10,278.12 × 4,618.80
  4. Step 4: Simplify right side
    7,449.12x = 47,472,580.66
  5. Step 5: Solve for x
    x = 47,472,580.66/7,449.12
  6. Step 6: Final answer
    x = 6,372.91

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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.