Home / 2,312.82-3,470.40-1,217.39

Finding the Fourth Proportional to 2,312.82, 3,470.40 and 1,217.39

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Solution

The fourth proportional to 2,312.82, 3,470.40 and 1,217.39 is: 1,826.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,312.82 : 3,470.40 = 1,217.39 : x
  2. Step 2: Convert to fraction form
    2,312.82/3,470.40 = 1,217.39/x
  3. Step 3: Cross multiply
    2,312.82x = 3,470.40 × 1,217.39
  4. Step 4: Simplify right side
    2,312.82x = 4,224,812.90
  5. Step 5: Solve for x
    x = 4,224,812.90/2,312.82
  6. Step 6: Final answer
    x = 1,826.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.