Home / 2,115.10-2,916.12-1,367.74

Finding the Fourth Proportional to 2,115.10, 2,916.12 and 1,367.74

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Solution

The fourth proportional to 2,115.10, 2,916.12 and 1,367.74 is: 1,885.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,115.10 : 2,916.12 = 1,367.74 : x
  2. Step 2: Convert to fraction form
    2,115.10/2,916.12 = 1,367.74/x
  3. Step 3: Cross multiply
    2,115.10x = 2,916.12 × 1,367.74
  4. Step 4: Simplify right side
    2,115.10x = 3,988,493.97
  5. Step 5: Solve for x
    x = 3,988,493.97/2,115.10
  6. Step 6: Final answer
    x = 1,885.72

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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.