Home / 5,077.74-7,007.40-2,839.56

Finding the Fourth Proportional to 5,077.74, 7,007.40 and 2,839.56

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Solution

The fourth proportional to 5,077.74, 7,007.40 and 2,839.56 is: 3,918.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,077.74 : 7,007.40 = 2,839.56 : x
  2. Step 2: Convert to fraction form
    5,077.74/7,007.40 = 2,839.56/x
  3. Step 3: Cross multiply
    5,077.74x = 7,007.40 × 2,839.56
  4. Step 4: Simplify right side
    5,077.74x = 19,897,932.74
  5. Step 5: Solve for x
    x = 19,897,932.74/5,077.74
  6. Step 6: Final answer
    x = 3,918.66

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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.