Home / 8,908.20-13,347.90-5,615.40

Finding the Fourth Proportional to 8,908.20, 13,347.90 and 5,615.40

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Solution

The fourth proportional to 8,908.20, 13,347.90 and 5,615.40 is: 8,414.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,908.20 : 13,347.90 = 5,615.40 : x
  2. Step 2: Convert to fraction form
    8,908.20/13,347.90 = 5,615.40/x
  3. Step 3: Cross multiply
    8,908.20x = 13,347.90 × 5,615.40
  4. Step 4: Simplify right side
    8,908.20x = 74,953,797.66
  5. Step 5: Solve for x
    x = 74,953,797.66/8,908.20
  6. Step 6: Final answer
    x = 8,414.02

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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.