Home / 2,856.78-4,285.74-1,395.96

Finding the Fourth Proportional to 2,856.78, 4,285.74 and 1,395.96

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Solution

The fourth proportional to 2,856.78, 4,285.74 and 1,395.96 is: 2,094.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,856.78 : 4,285.74 = 1,395.96 : x
  2. Step 2: Convert to fraction form
    2,856.78/4,285.74 = 1,395.96/x
  3. Step 3: Cross multiply
    2,856.78x = 4,285.74 × 1,395.96
  4. Step 4: Simplify right side
    2,856.78x = 5,982,721.61
  5. Step 5: Solve for x
    x = 5,982,721.61/2,856.78
  6. Step 6: Final answer
    x = 2,094.22

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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.