Home / 3,521.15-5,277.17-1,438.78

Finding the Fourth Proportional to 3,521.15, 5,277.17 and 1,438.78

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Solution

The fourth proportional to 3,521.15, 5,277.17 and 1,438.78 is: 2,156.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,521.15 : 5,277.17 = 1,438.78 : x
  2. Step 2: Convert to fraction form
    3,521.15/5,277.17 = 1,438.78/x
  3. Step 3: Cross multiply
    3,521.15x = 5,277.17 × 1,438.78
  4. Step 4: Simplify right side
    3,521.15x = 7,592,678.86
  5. Step 5: Solve for x
    x = 7,592,678.86/3,521.15
  6. Step 6: Final answer
    x = 2,156.30

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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.