Home / 5,385.20-8,076.84-1,488.72

Finding the Fourth Proportional to 5,385.20, 8,076.84 and 1,488.72

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Solution

The fourth proportional to 5,385.20, 8,076.84 and 1,488.72 is: 2,232.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,385.20 : 8,076.84 = 1,488.72 : x
  2. Step 2: Convert to fraction form
    5,385.20/8,076.84 = 1,488.72/x
  3. Step 3: Cross multiply
    5,385.20x = 8,076.84 × 1,488.72
  4. Step 4: Simplify right side
    5,385.20x = 12,024,153.24
  5. Step 5: Solve for x
    x = 12,024,153.24/5,385.20
  6. Step 6: Final answer
    x = 2,232.81

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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.