Home / 1,331.51-2,007.23-1,242.31

Finding the Fourth Proportional to 1,331.51, 2,007.23 and 1,242.31

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Solution

The fourth proportional to 1,331.51, 2,007.23 and 1,242.31 is: 1,872.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,331.51 : 2,007.23 = 1,242.31 : x
  2. Step 2: Convert to fraction form
    1,331.51/2,007.23 = 1,242.31/x
  3. Step 3: Cross multiply
    1,331.51x = 2,007.23 × 1,242.31
  4. Step 4: Simplify right side
    1,331.51x = 2,493,601.90
  5. Step 5: Solve for x
    x = 2,493,601.90/1,331.51
  6. Step 6: Final answer
    x = 1,872.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.