Home / 2,117.32-2,920.92-1,371.53

Finding the Fourth Proportional to 2,117.32, 2,920.92 and 1,371.53

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Solution

The fourth proportional to 2,117.32, 2,920.92 and 1,371.53 is: 1,892.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,117.32 : 2,920.92 = 1,371.53 : x
  2. Step 2: Convert to fraction form
    2,117.32/2,920.92 = 1,371.53/x
  3. Step 3: Cross multiply
    2,117.32x = 2,920.92 × 1,371.53
  4. Step 4: Simplify right side
    2,117.32x = 4,006,125.98
  5. Step 5: Solve for x
    x = 4,006,125.98/2,117.32
  6. Step 6: Final answer
    x = 1,892.07

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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.