Home / 6,781.70-10,172.55-4,456.40

Finding the Fourth Proportional to 6,781.70, 10,172.55 and 4,456.40

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Solution

The fourth proportional to 6,781.70, 10,172.55 and 4,456.40 is: 6,684.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,781.70 : 10,172.55 = 4,456.40 : x
  2. Step 2: Convert to fraction form
    6,781.70/10,172.55 = 4,456.40/x
  3. Step 3: Cross multiply
    6,781.70x = 10,172.55 × 4,456.40
  4. Step 4: Simplify right side
    6,781.70x = 45,332,951.82
  5. Step 5: Solve for x
    x = 45,332,951.82/6,781.70
  6. Step 6: Final answer
    x = 6,684.60

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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.