Home / 7,219.20-9,953.24-5,920.88

Finding the Fourth Proportional to 7,219.20, 9,953.24 and 5,920.88

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Solution

The fourth proportional to 7,219.20, 9,953.24 and 5,920.88 is: 8,163.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,219.20 : 9,953.24 = 5,920.88 : x
  2. Step 2: Convert to fraction form
    7,219.20/9,953.24 = 5,920.88/x
  3. Step 3: Cross multiply
    7,219.20x = 9,953.24 × 5,920.88
  4. Step 4: Simplify right side
    7,219.20x = 58,931,934.93
  5. Step 5: Solve for x
    x = 58,931,934.93/7,219.20
  6. Step 6: Final answer
    x = 8,163.22

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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.