Home / 1,916.04-2,641.56-1,286.70

Finding the Fourth Proportional to 1,916.04, 2,641.56 and 1,286.70

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Solution

The fourth proportional to 1,916.04, 2,641.56 and 1,286.70 is: 1,773.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,916.04 : 2,641.56 = 1,286.70 : x
  2. Step 2: Convert to fraction form
    1,916.04/2,641.56 = 1,286.70/x
  3. Step 3: Cross multiply
    1,916.04x = 2,641.56 × 1,286.70
  4. Step 4: Simplify right side
    1,916.04x = 3,398,895.25
  5. Step 5: Solve for x
    x = 3,398,895.25/1,916.04
  6. Step 6: Final answer
    x = 1,773.92

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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.