Home / 1,917.54-2,646.15-1,078.23

Finding the Fourth Proportional to 1,917.54, 2,646.15 and 1,078.23

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Solution

The fourth proportional to 1,917.54, 2,646.15 and 1,078.23 is: 1,487.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,917.54 : 2,646.15 = 1,078.23 : x
  2. Step 2: Convert to fraction form
    1,917.54/2,646.15 = 1,078.23/x
  3. Step 3: Cross multiply
    1,917.54x = 2,646.15 × 1,078.23
  4. Step 4: Simplify right side
    1,917.54x = 2,853,139.69
  5. Step 5: Solve for x
    x = 2,853,139.69/1,917.54
  6. Step 6: Final answer
    x = 1,487.92

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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.