Home / 2,220.83-3,064.88-1,276.66

Finding the Fourth Proportional to 2,220.83, 3,064.88 and 1,276.66

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Solution

The fourth proportional to 2,220.83, 3,064.88 and 1,276.66 is: 1,761.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,220.83 : 3,064.88 = 1,276.66 : x
  2. Step 2: Convert to fraction form
    2,220.83/3,064.88 = 1,276.66/x
  3. Step 3: Cross multiply
    2,220.83x = 3,064.88 × 1,276.66
  4. Step 4: Simplify right side
    2,220.83x = 3,912,807.75
  5. Step 5: Solve for x
    x = 3,912,807.75/2,220.83
  6. Step 6: Final answer
    x = 1,761.87

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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.