Home / 1,450.28-2,001.37-787.13

Finding the Fourth Proportional to 1,450.28, 2,001.37 and 787.13

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Solution

The fourth proportional to 1,450.28, 2,001.37 and 787.13 is: 1,086.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,450.28 : 2,001.37 = 787.13 : x
  2. Step 2: Convert to fraction form
    1,450.28/2,001.37 = 787.13/x
  3. Step 3: Cross multiply
    1,450.28x = 2,001.37 × 787.13
  4. Step 4: Simplify right side
    1,450.28x = 1,575,338.37
  5. Step 5: Solve for x
    x = 1,575,338.37/1,450.28
  6. Step 6: Final answer
    x = 1,086.23

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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.