Home / 1,864.28-2,572.56-1,078.38

Finding the Fourth Proportional to 1,864.28, 2,572.56 and 1,078.38

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Solution

The fourth proportional to 1,864.28, 2,572.56 and 1,078.38 is: 1,488.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,864.28 : 2,572.56 = 1,078.38 : x
  2. Step 2: Convert to fraction form
    1,864.28/2,572.56 = 1,078.38/x
  3. Step 3: Cross multiply
    1,864.28x = 2,572.56 × 1,078.38
  4. Step 4: Simplify right side
    1,864.28x = 2,774,197.25
  5. Step 5: Solve for x
    x = 2,774,197.25/1,864.28
  6. Step 6: Final answer
    x = 1,488.08

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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.