Home / 2,220.39-3,063.81-1,225.50

Finding the Fourth Proportional to 2,220.39, 3,063.81 and 1,225.50

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Solution

The fourth proportional to 2,220.39, 3,063.81 and 1,225.50 is: 1,691.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,220.39 : 3,063.81 = 1,225.50 : x
  2. Step 2: Convert to fraction form
    2,220.39/3,063.81 = 1,225.50/x
  3. Step 3: Cross multiply
    2,220.39x = 3,063.81 × 1,225.50
  4. Step 4: Simplify right side
    2,220.39x = 3,754,699.16
  5. Step 5: Solve for x
    x = 3,754,699.16/2,220.39
  6. Step 6: Final answer
    x = 1,691.01

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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.