Home / 2,175.28-3,261.30-1,480.20

Finding the Fourth Proportional to 2,175.28, 3,261.30 and 1,480.20

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Solution

The fourth proportional to 2,175.28, 3,261.30 and 1,480.20 is: 2,219.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,175.28 : 3,261.30 = 1,480.20 : x
  2. Step 2: Convert to fraction form
    2,175.28/3,261.30 = 1,480.20/x
  3. Step 3: Cross multiply
    2,175.28x = 3,261.30 × 1,480.20
  4. Step 4: Simplify right side
    2,175.28x = 4,827,376.26
  5. Step 5: Solve for x
    x = 4,827,376.26/2,175.28
  6. Step 6: Final answer
    x = 2,219.20

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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.