Home / 8,931.11-13,390.76-3,993.95

Finding the Fourth Proportional to 8,931.11, 13,390.76 and 3,993.95

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Solution

The fourth proportional to 8,931.11, 13,390.76 and 3,993.95 is: 5,988.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,931.11 : 13,390.76 = 3,993.95 : x
  2. Step 2: Convert to fraction form
    8,931.11/13,390.76 = 3,993.95/x
  3. Step 3: Cross multiply
    8,931.11x = 13,390.76 × 3,993.95
  4. Step 4: Simplify right side
    8,931.11x = 53,482,005.93
  5. Step 5: Solve for x
    x = 53,482,005.93/8,931.11
  6. Step 6: Final answer
    x = 5,988.28

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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.