Home / 7,081.64-9,772.40-3,937.76

Finding the Fourth Proportional to 7,081.64, 9,772.40 and 3,937.76

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Solution

The fourth proportional to 7,081.64, 9,772.40 and 3,937.76 is: 5,433.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,081.64 : 9,772.40 = 3,937.76 : x
  2. Step 2: Convert to fraction form
    7,081.64/9,772.40 = 3,937.76/x
  3. Step 3: Cross multiply
    7,081.64x = 9,772.40 × 3,937.76
  4. Step 4: Simplify right side
    7,081.64x = 38,481,326.81
  5. Step 5: Solve for x
    x = 38,481,326.81/7,081.64
  6. Step 6: Final answer
    x = 5,433.96

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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.