Home / 5,217.64-7,200.30-2,859.76

Finding the Fourth Proportional to 5,217.64, 7,200.30 and 2,859.76

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Solution

The fourth proportional to 5,217.64, 7,200.30 and 2,859.76 is: 3,946.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,217.64 : 7,200.30 = 2,859.76 : x
  2. Step 2: Convert to fraction form
    5,217.64/7,200.30 = 2,859.76/x
  3. Step 3: Cross multiply
    5,217.64x = 7,200.30 × 2,859.76
  4. Step 4: Simplify right side
    5,217.64x = 20,591,129.93
  5. Step 5: Solve for x
    x = 20,591,129.93/5,217.64
  6. Step 6: Final answer
    x = 3,946.45

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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.