Home / 2,257.40-3,117.36-2,134.70

Finding the Fourth Proportional to 2,257.40, 3,117.36 and 2,134.70

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Solution

The fourth proportional to 2,257.40, 3,117.36 and 2,134.70 is: 2,947.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,257.40 : 3,117.36 = 2,134.70 : x
  2. Step 2: Convert to fraction form
    2,257.40/3,117.36 = 2,134.70/x
  3. Step 3: Cross multiply
    2,257.40x = 3,117.36 × 2,134.70
  4. Step 4: Simplify right side
    2,257.40x = 6,654,628.39
  5. Step 5: Solve for x
    x = 6,654,628.39/2,257.40
  6. Step 6: Final answer
    x = 2,947.92

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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.