Home / 2,219.76-3,322.56-1,242.88

Finding the Fourth Proportional to 2,219.76, 3,322.56 and 1,242.88

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Solution

The fourth proportional to 2,219.76, 3,322.56 and 1,242.88 is: 1,860.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,219.76 : 3,322.56 = 1,242.88 : x
  2. Step 2: Convert to fraction form
    2,219.76/3,322.56 = 1,242.88/x
  3. Step 3: Cross multiply
    2,219.76x = 3,322.56 × 1,242.88
  4. Step 4: Simplify right side
    2,219.76x = 4,129,543.37
  5. Step 5: Solve for x
    x = 4,129,543.37/2,219.76
  6. Step 6: Final answer
    x = 1,860.36

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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.