Home / 4,742.47-7,117.22-2,278.72

Finding the Fourth Proportional to 4,742.47, 7,117.22 and 2,278.72

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Solution

The fourth proportional to 4,742.47, 7,117.22 and 2,278.72 is: 3,419.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,742.47 : 7,117.22 = 2,278.72 : x
  2. Step 2: Convert to fraction form
    4,742.47/7,117.22 = 2,278.72/x
  3. Step 3: Cross multiply
    4,742.47x = 7,117.22 × 2,278.72
  4. Step 4: Simplify right side
    4,742.47x = 16,218,151.56
  5. Step 5: Solve for x
    x = 16,218,151.56/4,742.47
  6. Step 6: Final answer
    x = 3,419.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.