Home / 8,972.89-12,382.39-4,993.76

Finding the Fourth Proportional to 8,972.89, 12,382.39 and 4,993.76

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Solution

The fourth proportional to 8,972.89, 12,382.39 and 4,993.76 is: 6,891.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,972.89 : 12,382.39 = 4,993.76 : x
  2. Step 2: Convert to fraction form
    8,972.89/12,382.39 = 4,993.76/x
  3. Step 3: Cross multiply
    8,972.89x = 12,382.39 × 4,993.76
  4. Step 4: Simplify right side
    8,972.89x = 61,834,683.89
  5. Step 5: Solve for x
    x = 61,834,683.89/8,972.89
  6. Step 6: Final answer
    x = 6,891.28

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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.