Home / 2,079.40-2,868.51-1,282.45

Finding the Fourth Proportional to 2,079.40, 2,868.51 and 1,282.45

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Solution

The fourth proportional to 2,079.40, 2,868.51 and 1,282.45 is: 1,769.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,079.40 : 2,868.51 = 1,282.45 : x
  2. Step 2: Convert to fraction form
    2,079.40/2,868.51 = 1,282.45/x
  3. Step 3: Cross multiply
    2,079.40x = 2,868.51 × 1,282.45
  4. Step 4: Simplify right side
    2,079.40x = 3,678,720.65
  5. Step 5: Solve for x
    x = 3,678,720.65/2,079.40
  6. Step 6: Final answer
    x = 1,769.13

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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.