Home / 2,856.36-4,281.90-1,124.60

Finding the Fourth Proportional to 2,856.36, 4,281.90 and 1,124.60

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Solution

The fourth proportional to 2,856.36, 4,281.90 and 1,124.60 is: 1,685.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,856.36 : 4,281.90 = 1,124.60 : x
  2. Step 2: Convert to fraction form
    2,856.36/4,281.90 = 1,124.60/x
  3. Step 3: Cross multiply
    2,856.36x = 4,281.90 × 1,124.60
  4. Step 4: Simplify right side
    2,856.36x = 4,815,424.74
  5. Step 5: Solve for x
    x = 4,815,424.74/2,856.36
  6. Step 6: Final answer
    x = 1,685.86

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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.