Home / 2,117.92-2,921.94-1,372.29

Finding the Fourth Proportional to 2,117.92, 2,921.94 and 1,372.29

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Solution

The fourth proportional to 2,117.92, 2,921.94 and 1,372.29 is: 1,893.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,117.92 : 2,921.94 = 1,372.29 : x
  2. Step 2: Convert to fraction form
    2,117.92/2,921.94 = 1,372.29/x
  3. Step 3: Cross multiply
    2,117.92x = 2,921.94 × 1,372.29
  4. Step 4: Simplify right side
    2,117.92x = 4,009,749.04
  5. Step 5: Solve for x
    x = 4,009,749.04/2,117.92
  6. Step 6: Final answer
    x = 1,893.25

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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.