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Finding the Fourth Proportional to 2,220.70, 3,331.05 and 924.70

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Solution

The fourth proportional to 2,220.70, 3,331.05 and 924.70 is: 1,387.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,220.70 : 3,331.05 = 924.70 : x
  2. Step 2: Convert to fraction form
    2,220.70/3,331.05 = 924.70/x
  3. Step 3: Cross multiply
    2,220.70x = 3,331.05 × 924.70
  4. Step 4: Simplify right side
    2,220.70x = 3,080,221.94
  5. Step 5: Solve for x
    x = 3,080,221.94/2,220.70
  6. Step 6: Final answer
    x = 1,387.05

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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.