Home / 8,815.79-13,223.72-2,972.45

Finding the Fourth Proportional to 8,815.79, 13,223.72 and 2,972.45

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Solution

The fourth proportional to 8,815.79, 13,223.72 and 2,972.45 is: 4,458.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,815.79 : 13,223.72 = 2,972.45 : x
  2. Step 2: Convert to fraction form
    8,815.79/13,223.72 = 2,972.45/x
  3. Step 3: Cross multiply
    8,815.79x = 13,223.72 × 2,972.45
  4. Step 4: Simplify right side
    8,815.79x = 39,306,765.53
  5. Step 5: Solve for x
    x = 39,306,765.53/8,815.79
  6. Step 6: Final answer
    x = 4,458.68

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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.