Home / 8,758.90-13,140.44-2,915.56

Finding the Fourth Proportional to 8,758.90, 13,140.44 and 2,915.56

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Solution

The fourth proportional to 8,758.90, 13,140.44 and 2,915.56 is: 4,374.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,758.90 : 13,140.44 = 2,915.56 : x
  2. Step 2: Convert to fraction form
    8,758.90/13,140.44 = 2,915.56/x
  3. Step 3: Cross multiply
    8,758.90x = 13,140.44 × 2,915.56
  4. Step 4: Simplify right side
    8,758.90x = 38,311,741.25
  5. Step 5: Solve for x
    x = 38,311,741.25/8,758.90
  6. Step 6: Final answer
    x = 4,374.04

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1.5x scale

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.