Home / 8,913.86-13,366.28-5,217.20

Finding the Fourth Proportional to 8,913.86, 13,366.28 and 5,217.20

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Solution

The fourth proportional to 8,913.86, 13,366.28 and 5,217.20 is: 7,823.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,913.86 : 13,366.28 = 5,217.20 : x
  2. Step 2: Convert to fraction form
    8,913.86/13,366.28 = 5,217.20/x
  3. Step 3: Cross multiply
    8,913.86x = 13,366.28 × 5,217.20
  4. Step 4: Simplify right side
    8,913.86x = 69,734,556.02
  5. Step 5: Solve for x
    x = 69,734,556.02/8,913.86
  6. Step 6: Final answer
    x = 7,823.16

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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.