Home / 5,915.70-8,869.23-3,140.10

Finding the Fourth Proportional to 5,915.70, 8,869.23 and 3,140.10

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Solution

The fourth proportional to 5,915.70, 8,869.23 and 3,140.10 is: 4,707.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,915.70 : 8,869.23 = 3,140.10 : x
  2. Step 2: Convert to fraction form
    5,915.70/8,869.23 = 3,140.10/x
  3. Step 3: Cross multiply
    5,915.70x = 8,869.23 × 3,140.10
  4. Step 4: Simplify right side
    5,915.70x = 27,850,269.12
  5. Step 5: Solve for x
    x = 27,850,269.12/5,915.70
  6. Step 6: Final answer
    x = 4,707.86

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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.