Home / 5,915.20-8,157.96-3,556.90

Finding the Fourth Proportional to 5,915.20, 8,157.96 and 3,556.90

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Solution

The fourth proportional to 5,915.20, 8,157.96 and 3,556.90 is: 4,905.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,915.20 : 8,157.96 = 3,556.90 : x
  2. Step 2: Convert to fraction form
    5,915.20/8,157.96 = 3,556.90/x
  3. Step 3: Cross multiply
    5,915.20x = 8,157.96 × 3,556.90
  4. Step 4: Simplify right side
    5,915.20x = 29,017,047.92
  5. Step 5: Solve for x
    x = 29,017,047.92/5,915.20
  6. Step 6: Final answer
    x = 4,905.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.