Home / 2,212.56-3,317.76-1,555.20

Finding the Fourth Proportional to 2,212.56, 3,317.76 and 1,555.20

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Solution

The fourth proportional to 2,212.56, 3,317.76 and 1,555.20 is: 2,332.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,212.56 : 3,317.76 = 1,555.20 : x
  2. Step 2: Convert to fraction form
    2,212.56/3,317.76 = 1,555.20/x
  3. Step 3: Cross multiply
    2,212.56x = 3,317.76 × 1,555.20
  4. Step 4: Simplify right side
    2,212.56x = 5,159,780.35
  5. Step 5: Solve for x
    x = 5,159,780.35/2,212.56
  6. Step 6: Final answer
    x = 2,332.04

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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.