Home / 5,615.20-8,406.16-4,160.88

Finding the Fourth Proportional to 5,615.20, 8,406.16 and 4,160.88

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Solution

The fourth proportional to 5,615.20, 8,406.16 and 4,160.88 is: 6,228.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,615.20 : 8,406.16 = 4,160.88 : x
  2. Step 2: Convert to fraction form
    5,615.20/8,406.16 = 4,160.88/x
  3. Step 3: Cross multiply
    5,615.20x = 8,406.16 × 4,160.88
  4. Step 4: Simplify right side
    5,615.20x = 34,977,023.02
  5. Step 5: Solve for x
    x = 34,977,023.02/5,615.20
  6. Step 6: Final answer
    x = 6,228.99

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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.