Home / 4,419.28-6,629.72-1,820.80

Finding the Fourth Proportional to 4,419.28, 6,629.72 and 1,820.80

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Solution

The fourth proportional to 4,419.28, 6,629.72 and 1,820.80 is: 2,731.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,419.28 : 6,629.72 = 1,820.80 : x
  2. Step 2: Convert to fraction form
    4,419.28/6,629.72 = 1,820.80/x
  3. Step 3: Cross multiply
    4,419.28x = 6,629.72 × 1,820.80
  4. Step 4: Simplify right side
    4,419.28x = 12,071,394.18
  5. Step 5: Solve for x
    x = 12,071,394.18/4,419.28
  6. Step 6: Final answer
    x = 2,731.53

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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.