Home / 8,900.68-12,283.49-5,123.76

Finding the Fourth Proportional to 8,900.68, 12,283.49 and 5,123.76

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Solution

The fourth proportional to 8,900.68, 12,283.49 and 5,123.76 is: 7,071.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,900.68 : 12,283.49 = 5,123.76 : x
  2. Step 2: Convert to fraction form
    8,900.68/12,283.49 = 5,123.76/x
  3. Step 3: Cross multiply
    8,900.68x = 12,283.49 × 5,123.76
  4. Step 4: Simplify right side
    8,900.68x = 62,937,654.72
  5. Step 5: Solve for x
    x = 62,937,654.72/8,900.68
  6. Step 6: Final answer
    x = 7,071.11

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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.