Home / 1,450.16-2,001.22-787.03

Finding the Fourth Proportional to 1,450.16, 2,001.22 and 787.03

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Solution

The fourth proportional to 1,450.16, 2,001.22 and 787.03 is: 1,086.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,450.16 : 2,001.22 = 787.03 : x
  2. Step 2: Convert to fraction form
    1,450.16/2,001.22 = 787.03/x
  3. Step 3: Cross multiply
    1,450.16x = 2,001.22 × 787.03
  4. Step 4: Simplify right side
    1,450.16x = 1,575,013.21
  5. Step 5: Solve for x
    x = 1,575,013.21/1,450.16
  6. Step 6: Final answer
    x = 1,086.10

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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.