Home / 1,916.92-2,645.13-1,077.42

Finding the Fourth Proportional to 1,916.92, 2,645.13 and 1,077.42

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Solution

The fourth proportional to 1,916.92, 2,645.13 and 1,077.42 is: 1,486.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,916.92 : 2,645.13 = 1,077.42 : x
  2. Step 2: Convert to fraction form
    1,916.92/2,645.13 = 1,077.42/x
  3. Step 3: Cross multiply
    1,916.92x = 2,645.13 × 1,077.42
  4. Step 4: Simplify right side
    1,916.92x = 2,849,915.96
  5. Step 5: Solve for x
    x = 2,849,915.96/1,916.92
  6. Step 6: Final answer
    x = 1,486.72

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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.