Home / 2,341.40-3,231.96-1,555.70

Finding the Fourth Proportional to 2,341.40, 3,231.96 and 1,555.70

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Solution

The fourth proportional to 2,341.40, 3,231.96 and 1,555.70 is: 2,147.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,341.40 : 3,231.96 = 1,555.70 : x
  2. Step 2: Convert to fraction form
    2,341.40/3,231.96 = 1,555.70/x
  3. Step 3: Cross multiply
    2,341.40x = 3,231.96 × 1,555.70
  4. Step 4: Simplify right side
    2,341.40x = 5,027,960.17
  5. Step 5: Solve for x
    x = 5,027,960.17/2,341.40
  6. Step 6: Final answer
    x = 2,147.42

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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.