Home / 8,966.81-13,450.28-3,123.40

Finding the Fourth Proportional to 8,966.81, 13,450.28 and 3,123.40

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Solution

The fourth proportional to 8,966.81, 13,450.28 and 3,123.40 is: 4,685.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,966.81 : 13,450.28 = 3,123.40 : x
  2. Step 2: Convert to fraction form
    8,966.81/13,450.28 = 3,123.40/x
  3. Step 3: Cross multiply
    8,966.81x = 13,450.28 × 3,123.40
  4. Step 4: Simplify right side
    8,966.81x = 42,010,604.55
  5. Step 5: Solve for x
    x = 42,010,604.55/8,966.81
  6. Step 6: Final answer
    x = 4,685.12

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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.