Home / 2,114.40-2,917.38-1,229.70

Finding the Fourth Proportional to 2,114.40, 2,917.38 and 1,229.70

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Solution

The fourth proportional to 2,114.40, 2,917.38 and 1,229.70 is: 1,696.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,114.40 : 2,917.38 = 1,229.70 : x
  2. Step 2: Convert to fraction form
    2,114.40/2,917.38 = 1,229.70/x
  3. Step 3: Cross multiply
    2,114.40x = 2,917.38 × 1,229.70
  4. Step 4: Simplify right side
    2,114.40x = 3,587,502.19
  5. Step 5: Solve for x
    x = 3,587,502.19/2,114.40
  6. Step 6: Final answer
    x = 1,696.70

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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.