Home / 5,877.12-8,815.71-1,981.56

Finding the Fourth Proportional to 5,877.12, 8,815.71 and 1,981.56

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Solution

The fourth proportional to 5,877.12, 8,815.71 and 1,981.56 is: 2,972.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,877.12 : 8,815.71 = 1,981.56 : x
  2. Step 2: Convert to fraction form
    5,877.12/8,815.71 = 1,981.56/x
  3. Step 3: Cross multiply
    5,877.12x = 8,815.71 × 1,981.56
  4. Step 4: Simplify right side
    5,877.12x = 17,468,858.31
  5. Step 5: Solve for x
    x = 17,468,858.31/5,877.12
  6. Step 6: Final answer
    x = 2,972.35

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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.