Home / 8,330.91-12,435.59-7,279.95

Finding the Fourth Proportional to 8,330.91, 12,435.59 and 7,279.95

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Solution

The fourth proportional to 8,330.91, 12,435.59 and 7,279.95 is: 10,866.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,330.91 : 12,435.59 = 7,279.95 : x
  2. Step 2: Convert to fraction form
    8,330.91/12,435.59 = 7,279.95/x
  3. Step 3: Cross multiply
    8,330.91x = 12,435.59 × 7,279.95
  4. Step 4: Simplify right side
    8,330.91x = 90,530,437.02
  5. Step 5: Solve for x
    x = 90,530,437.02/8,330.91
  6. Step 6: Final answer
    x = 10,866.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.