Home / 2,280.90-3,147.30-1,441.20

Finding the Fourth Proportional to 2,280.90, 3,147.30 and 1,441.20

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Solution

The fourth proportional to 2,280.90, 3,147.30 and 1,441.20 is: 1,988.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,280.90 : 3,147.30 = 1,441.20 : x
  2. Step 2: Convert to fraction form
    2,280.90/3,147.30 = 1,441.20/x
  3. Step 3: Cross multiply
    2,280.90x = 3,147.30 × 1,441.20
  4. Step 4: Simplify right side
    2,280.90x = 4,535,888.76
  5. Step 5: Solve for x
    x = 4,535,888.76/2,280.90
  6. Step 6: Final answer
    x = 1,988.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.