Home / 2,113.29-2,916-1,326.78

Finding the Fourth Proportional to 2,113.29, 2,916 and 1,326.78

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Solution

The fourth proportional to 2,113.29, 2,916 and 1,326.78 is: 1,830.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,113.29 : 2,916 = 1,326.78 : x
  2. Step 2: Convert to fraction form
    2,113.29/2,916 = 1,326.78/x
  3. Step 3: Cross multiply
    2,113.29x = 2,916 × 1,326.78
  4. Step 4: Simplify right side
    2,113.29x = 3,868,890.48
  5. Step 5: Solve for x
    x = 3,868,890.48/2,113.29
  6. Step 6: Final answer
    x = 1,830.74

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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.