Home / 2,220.21-3,063.85-1,225.52

Finding the Fourth Proportional to 2,220.21, 3,063.85 and 1,225.52

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Solution

The fourth proportional to 2,220.21, 3,063.85 and 1,225.52 is: 1,691.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,220.21 : 3,063.85 = 1,225.52 : x
  2. Step 2: Convert to fraction form
    2,220.21/3,063.85 = 1,225.52/x
  3. Step 3: Cross multiply
    2,220.21x = 3,063.85 × 1,225.52
  4. Step 4: Simplify right side
    2,220.21x = 3,754,809.45
  5. Step 5: Solve for x
    x = 3,754,809.45/2,220.21
  6. Step 6: Final answer
    x = 1,691.20

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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.