Home / 6,290.78-9,432.42-2,129.60

Finding the Fourth Proportional to 6,290.78, 9,432.42 and 2,129.60

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Solution

The fourth proportional to 6,290.78, 9,432.42 and 2,129.60 is: 3,193.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,290.78 : 9,432.42 = 2,129.60 : x
  2. Step 2: Convert to fraction form
    6,290.78/9,432.42 = 2,129.60/x
  3. Step 3: Cross multiply
    6,290.78x = 9,432.42 × 2,129.60
  4. Step 4: Simplify right side
    6,290.78x = 20,087,281.63
  5. Step 5: Solve for x
    x = 20,087,281.63/6,290.78
  6. Step 6: Final answer
    x = 3,193.13

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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.