Home / 2,890.20-3,985.96-2,330.50

Finding the Fourth Proportional to 2,890.20, 3,985.96 and 2,330.50

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Solution

The fourth proportional to 2,890.20, 3,985.96 and 2,330.50 is: 3,214.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,890.20 : 3,985.96 = 2,330.50 : x
  2. Step 2: Convert to fraction form
    2,890.20/3,985.96 = 2,330.50/x
  3. Step 3: Cross multiply
    2,890.20x = 3,985.96 × 2,330.50
  4. Step 4: Simplify right side
    2,890.20x = 9,289,279.78
  5. Step 5: Solve for x
    x = 9,289,279.78/2,890.20
  6. Step 6: Final answer
    x = 3,214.06

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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.