Home / 5,478.90-8,218.35-3,532.47

Finding the Fourth Proportional to 5,478.90, 8,218.35 and 3,532.47

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Solution

The fourth proportional to 5,478.90, 8,218.35 and 3,532.47 is: 5,298.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,478.90 : 8,218.35 = 3,532.47 : x
  2. Step 2: Convert to fraction form
    5,478.90/8,218.35 = 3,532.47/x
  3. Step 3: Cross multiply
    5,478.90x = 8,218.35 × 3,532.47
  4. Step 4: Simplify right side
    5,478.90x = 29,031,074.82
  5. Step 5: Solve for x
    x = 29,031,074.82/5,478.90
  6. Step 6: Final answer
    x = 5,298.71

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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.