Home / 2,219.20-3,062.44-1,275.16

Finding the Fourth Proportional to 2,219.20, 3,062.44 and 1,275.16

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Solution

The fourth proportional to 2,219.20, 3,062.44 and 1,275.16 is: 1,759.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,219.20 : 3,062.44 = 1,275.16 : x
  2. Step 2: Convert to fraction form
    2,219.20/3,062.44 = 1,275.16/x
  3. Step 3: Cross multiply
    2,219.20x = 3,062.44 × 1,275.16
  4. Step 4: Simplify right side
    2,219.20x = 3,905,100.99
  5. Step 5: Solve for x
    x = 3,905,100.99/2,219.20
  6. Step 6: Final answer
    x = 1,759.69

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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.