Home / 6,517.36-8,990.61-4,278.91

Finding the Fourth Proportional to 6,517.36, 8,990.61 and 4,278.91

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Solution

The fourth proportional to 6,517.36, 8,990.61 and 4,278.91 is: 5,902.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,517.36 : 8,990.61 = 4,278.91 : x
  2. Step 2: Convert to fraction form
    6,517.36/8,990.61 = 4,278.91/x
  3. Step 3: Cross multiply
    6,517.36x = 8,990.61 × 4,278.91
  4. Step 4: Simplify right side
    6,517.36x = 38,470,011.04
  5. Step 5: Solve for x
    x = 38,470,011.04/6,517.36
  6. Step 6: Final answer
    x = 5,902.70

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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.