Home / 1,312.27-1,957.31-1,236.13

Finding the Fourth Proportional to 1,312.27, 1,957.31 and 1,236.13

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Solution

The fourth proportional to 1,312.27, 1,957.31 and 1,236.13 is: 1,843.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,312.27 : 1,957.31 = 1,236.13 : x
  2. Step 2: Convert to fraction form
    1,312.27/1,957.31 = 1,236.13/x
  3. Step 3: Cross multiply
    1,312.27x = 1,957.31 × 1,236.13
  4. Step 4: Simplify right side
    1,312.27x = 2,419,490.13
  5. Step 5: Solve for x
    x = 2,419,490.13/1,312.27
  6. Step 6: Final answer
    x = 1,843.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.