Home / 4,989.64-7,484.46-4,122.13

Finding the Fourth Proportional to 4,989.64, 7,484.46 and 4,122.13

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Solution

The fourth proportional to 4,989.64, 7,484.46 and 4,122.13 is: 6,183.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,989.64 : 7,484.46 = 4,122.13 : x
  2. Step 2: Convert to fraction form
    4,989.64/7,484.46 = 4,122.13/x
  3. Step 3: Cross multiply
    4,989.64x = 7,484.46 × 4,122.13
  4. Step 4: Simplify right side
    4,989.64x = 30,851,917.10
  5. Step 5: Solve for x
    x = 30,851,917.10/4,989.64
  6. Step 6: Final answer
    x = 6,183.20

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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.