Home / 4,381.78-6,565.38-1,912.90

Finding the Fourth Proportional to 4,381.78, 6,565.38 and 1,912.90

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Solution

The fourth proportional to 4,381.78, 6,565.38 and 1,912.90 is: 2,866.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,381.78 : 6,565.38 = 1,912.90 : x
  2. Step 2: Convert to fraction form
    4,381.78/6,565.38 = 1,912.90/x
  3. Step 3: Cross multiply
    4,381.78x = 6,565.38 × 1,912.90
  4. Step 4: Simplify right side
    4,381.78x = 12,558,915.40
  5. Step 5: Solve for x
    x = 12,558,915.40/4,381.78
  6. Step 6: Final answer
    x = 2,866.17

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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.