Home / 7,529.40-11,280.76-6,422.56

Finding the Fourth Proportional to 7,529.40, 11,280.76 and 6,422.56

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Solution

The fourth proportional to 7,529.40, 11,280.76 and 6,422.56 is: 9,622.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,529.40 : 11,280.76 = 6,422.56 : x
  2. Step 2: Convert to fraction form
    7,529.40/11,280.76 = 6,422.56/x
  3. Step 3: Cross multiply
    7,529.40x = 11,280.76 × 6,422.56
  4. Step 4: Simplify right side
    7,529.40x = 72,451,357.95
  5. Step 5: Solve for x
    x = 72,451,357.95/7,529.40
  6. Step 6: Final answer
    x = 9,622.46

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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.