Home / 4,778.60-7,162.43-2,148.12

Finding the Fourth Proportional to 4,778.60, 7,162.43 and 2,148.12

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Solution

The fourth proportional to 4,778.60, 7,162.43 and 2,148.12 is: 3,219.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,778.60 : 7,162.43 = 2,148.12 : x
  2. Step 2: Convert to fraction form
    4,778.60/7,162.43 = 2,148.12/x
  3. Step 3: Cross multiply
    4,778.60x = 7,162.43 × 2,148.12
  4. Step 4: Simplify right side
    4,778.60x = 15,385,748.39
  5. Step 5: Solve for x
    x = 15,385,748.39/4,778.60
  6. Step 6: Final answer
    x = 3,219.72

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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.