Home / 2,781.09-4,170.02-1,047.69

Finding the Fourth Proportional to 2,781.09, 4,170.02 and 1,047.69

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Solution

The fourth proportional to 2,781.09, 4,170.02 and 1,047.69 is: 1,570.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,781.09 : 4,170.02 = 1,047.69 : x
  2. Step 2: Convert to fraction form
    2,781.09/4,170.02 = 1,047.69/x
  3. Step 3: Cross multiply
    2,781.09x = 4,170.02 × 1,047.69
  4. Step 4: Simplify right side
    2,781.09x = 4,368,883.02
  5. Step 5: Solve for x
    x = 4,368,883.02/2,781.09
  6. Step 6: Final answer
    x = 1,570.92

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.