Home / 8,123.40-12,187.58-3,440.97

Finding the Fourth Proportional to 8,123.40, 12,187.58 and 3,440.97

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Solution

The fourth proportional to 8,123.40, 12,187.58 and 3,440.97 is: 5,162.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,123.40 : 12,187.58 = 3,440.97 : x
  2. Step 2: Convert to fraction form
    8,123.40/12,187.58 = 3,440.97/x
  3. Step 3: Cross multiply
    8,123.40x = 12,187.58 × 3,440.97
  4. Step 4: Simplify right side
    8,123.40x = 41,937,079.95
  5. Step 5: Solve for x
    x = 41,937,079.95/8,123.40
  6. Step 6: Final answer
    x = 5,162.50

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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.