Home / 3,112.81-4,301.13-2,488.48

Finding the Fourth Proportional to 3,112.81, 4,301.13 and 2,488.48

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Solution

The fourth proportional to 3,112.81, 4,301.13 and 2,488.48 is: 3,438.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,112.81 : 4,301.13 = 2,488.48 : x
  2. Step 2: Convert to fraction form
    3,112.81/4,301.13 = 2,488.48/x
  3. Step 3: Cross multiply
    3,112.81x = 4,301.13 × 2,488.48
  4. Step 4: Simplify right side
    3,112.81x = 10,703,275.98
  5. Step 5: Solve for x
    x = 10,703,275.98/3,112.81
  6. Step 6: Final answer
    x = 3,438.46

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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.