Home / 8,865.28-12,235.20-5,140.48

Finding the Fourth Proportional to 8,865.28, 12,235.20 and 5,140.48

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Solution

The fourth proportional to 8,865.28, 12,235.20 and 5,140.48 is: 7,094.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,865.28 : 12,235.20 = 5,140.48 : x
  2. Step 2: Convert to fraction form
    8,865.28/12,235.20 = 5,140.48/x
  3. Step 3: Cross multiply
    8,865.28x = 12,235.20 × 5,140.48
  4. Step 4: Simplify right side
    8,865.28x = 62,894,800.90
  5. Step 5: Solve for x
    x = 62,894,800.90/8,865.28
  6. Step 6: Final answer
    x = 7,094.51

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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.