Home / 1,856.28-2,780.47-1,393.37

Finding the Fourth Proportional to 1,856.28, 2,780.47 and 1,393.37

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Solution

The fourth proportional to 1,856.28, 2,780.47 and 1,393.37 is: 2,087.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,856.28 : 2,780.47 = 1,393.37 : x
  2. Step 2: Convert to fraction form
    1,856.28/2,780.47 = 1,393.37/x
  3. Step 3: Cross multiply
    1,856.28x = 2,780.47 × 1,393.37
  4. Step 4: Simplify right side
    1,856.28x = 3,874,202.61
  5. Step 5: Solve for x
    x = 3,874,202.61/1,856.28
  6. Step 6: Final answer
    x = 2,087.08

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.