Home / 2,207.13-3,310.19-646.80

Finding the Fourth Proportional to 2,207.13, 3,310.19 and 646.80

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Solution

The fourth proportional to 2,207.13, 3,310.19 and 646.80 is: 970.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,207.13 : 3,310.19 = 646.80 : x
  2. Step 2: Convert to fraction form
    2,207.13/3,310.19 = 646.80/x
  3. Step 3: Cross multiply
    2,207.13x = 3,310.19 × 646.80
  4. Step 4: Simplify right side
    2,207.13x = 2,141,030.89
  5. Step 5: Solve for x
    x = 2,141,030.89/2,207.13
  6. Step 6: Final answer
    x = 970.05

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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.