Home / 2,261.66-3,121.59-1,377.50

Finding the Fourth Proportional to 2,261.66, 3,121.59 and 1,377.50

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Solution

The fourth proportional to 2,261.66, 3,121.59 and 1,377.50 is: 1,901.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,261.66 : 3,121.59 = 1,377.50 : x
  2. Step 2: Convert to fraction form
    2,261.66/3,121.59 = 1,377.50/x
  3. Step 3: Cross multiply
    2,261.66x = 3,121.59 × 1,377.50
  4. Step 4: Simplify right side
    2,261.66x = 4,299,990.23
  5. Step 5: Solve for x
    x = 4,299,990.23/2,261.66
  6. Step 6: Final answer
    x = 1,901.25

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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.