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Finding the Fourth Proportional to 4,989.68, 7,484.22 and 1,479.54

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Solution

The fourth proportional to 4,989.68, 7,484.22 and 1,479.54 is: 2,219.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,989.68 : 7,484.22 = 1,479.54 : x
  2. Step 2: Convert to fraction form
    4,989.68/7,484.22 = 1,479.54/x
  3. Step 3: Cross multiply
    4,989.68x = 7,484.22 × 1,479.54
  4. Step 4: Simplify right side
    4,989.68x = 11,073,202.86
  5. Step 5: Solve for x
    x = 11,073,202.86/4,989.68
  6. Step 6: Final answer
    x = 2,219.22

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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.