Home / 7,161.92-10,742.45-4,258.70

Finding the Fourth Proportional to 7,161.92, 10,742.45 and 4,258.70

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Solution

The fourth proportional to 7,161.92, 10,742.45 and 4,258.70 is: 6,387.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,161.92 : 10,742.45 = 4,258.70 : x
  2. Step 2: Convert to fraction form
    7,161.92/10,742.45 = 4,258.70/x
  3. Step 3: Cross multiply
    7,161.92x = 10,742.45 × 4,258.70
  4. Step 4: Simplify right side
    7,161.92x = 45,748,796.81
  5. Step 5: Solve for x
    x = 45,748,796.81/7,161.92
  6. Step 6: Final answer
    x = 6,387.79

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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.