Home / 3,407.25-4,701.20-1,991.17

Finding the Fourth Proportional to 3,407.25, 4,701.20 and 1,991.17

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Solution

The fourth proportional to 3,407.25, 4,701.20 and 1,991.17 is: 2,747.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,407.25 : 4,701.20 = 1,991.17 : x
  2. Step 2: Convert to fraction form
    3,407.25/4,701.20 = 1,991.17/x
  3. Step 3: Cross multiply
    3,407.25x = 4,701.20 × 1,991.17
  4. Step 4: Simplify right side
    3,407.25x = 9,360,888.40
  5. Step 5: Solve for x
    x = 9,360,888.40/3,407.25
  6. Step 6: Final answer
    x = 2,747.34

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1.5x scale

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.