Home / 7,981.52-11,947.64-5,202.21

Finding the Fourth Proportional to 7,981.52, 11,947.64 and 5,202.21

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Solution

The fourth proportional to 7,981.52, 11,947.64 and 5,202.21 is: 7,787.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,981.52 : 11,947.64 = 5,202.21 : x
  2. Step 2: Convert to fraction form
    7,981.52/11,947.64 = 5,202.21/x
  3. Step 3: Cross multiply
    7,981.52x = 11,947.64 × 5,202.21
  4. Step 4: Simplify right side
    7,981.52x = 62,154,106.27
  5. Step 5: Solve for x
    x = 62,154,106.27/7,981.52
  6. Step 6: Final answer
    x = 7,787.26

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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.