Home / 2,270.95-3,133.88-1,276.21

Finding the Fourth Proportional to 2,270.95, 3,133.88 and 1,276.21

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Solution

The fourth proportional to 2,270.95, 3,133.88 and 1,276.21 is: 1,761.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,270.95 : 3,133.88 = 1,276.21 : x
  2. Step 2: Convert to fraction form
    2,270.95/3,133.88 = 1,276.21/x
  3. Step 3: Cross multiply
    2,270.95x = 3,133.88 × 1,276.21
  4. Step 4: Simplify right side
    2,270.95x = 3,999,466.94
  5. Step 5: Solve for x
    x = 3,999,466.94/2,270.95
  6. Step 6: Final answer
    x = 1,761.15

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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.