Home / 2,220.40-3,064.30-1,276.49

Finding the Fourth Proportional to 2,220.40, 3,064.30 and 1,276.49

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Solution

The fourth proportional to 2,220.40, 3,064.30 and 1,276.49 is: 1,761.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,220.40 : 3,064.30 = 1,276.49 : x
  2. Step 2: Convert to fraction form
    2,220.40/3,064.30 = 1,276.49/x
  3. Step 3: Cross multiply
    2,220.40x = 3,064.30 × 1,276.49
  4. Step 4: Simplify right side
    2,220.40x = 3,911,552.78
  5. Step 5: Solve for x
    x = 3,911,552.78/2,220.40
  6. Step 6: Final answer
    x = 1,761.65

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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.