Home / 1,916.43-2,644.38-1,077.15

Finding the Fourth Proportional to 1,916.43, 2,644.38 and 1,077.15

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Solution

The fourth proportional to 1,916.43, 2,644.38 and 1,077.15 is: 1,486.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,916.43 : 2,644.38 = 1,077.15 : x
  2. Step 2: Convert to fraction form
    1,916.43/2,644.38 = 1,077.15/x
  3. Step 3: Cross multiply
    1,916.43x = 2,644.38 × 1,077.15
  4. Step 4: Simplify right side
    1,916.43x = 2,848,393.92
  5. Step 5: Solve for x
    x = 2,848,393.92/1,916.43
  6. Step 6: Final answer
    x = 1,486.30

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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.