Home / 2,878.20-4,317.30-930.35

Finding the Fourth Proportional to 2,878.20, 4,317.30 and 930.35

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Solution

The fourth proportional to 2,878.20, 4,317.30 and 930.35 is: 1,395.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,878.20 : 4,317.30 = 930.35 : x
  2. Step 2: Convert to fraction form
    2,878.20/4,317.30 = 930.35/x
  3. Step 3: Cross multiply
    2,878.20x = 4,317.30 × 930.35
  4. Step 4: Simplify right side
    2,878.20x = 4,016,610.85
  5. Step 5: Solve for x
    x = 4,016,610.85/2,878.20
  6. Step 6: Final answer
    x = 1,395.53

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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.