Home / 3,117.90-4,308.40-2,966.04

Finding the Fourth Proportional to 3,117.90, 4,308.40 and 2,966.04

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Solution

The fourth proportional to 3,117.90, 4,308.40 and 2,966.04 is: 4,098.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,117.90 : 4,308.40 = 2,966.04 : x
  2. Step 2: Convert to fraction form
    3,117.90/4,308.40 = 2,966.04/x
  3. Step 3: Cross multiply
    3,117.90x = 4,308.40 × 2,966.04
  4. Step 4: Simplify right side
    3,117.90x = 12,778,865.19
  5. Step 5: Solve for x
    x = 12,778,865.19/3,117.90
  6. Step 6: Final answer
    x = 4,098.56

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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.