Home / 3,138.19-4,328.29-2,298.59

Finding the Fourth Proportional to 3,138.19, 4,328.29 and 2,298.59

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Solution

The fourth proportional to 3,138.19, 4,328.29 and 2,298.59 is: 3,170.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,138.19 : 4,328.29 = 2,298.59 : x
  2. Step 2: Convert to fraction form
    3,138.19/4,328.29 = 2,298.59/x
  3. Step 3: Cross multiply
    3,138.19x = 4,328.29 × 2,298.59
  4. Step 4: Simplify right side
    3,138.19x = 9,948,936.72
  5. Step 5: Solve for x
    x = 9,948,936.72/3,138.19
  6. Step 6: Final answer
    x = 3,170.28

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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.