Home / 3,394.13-4,683.51-1,978.11

Finding the Fourth Proportional to 3,394.13, 4,683.51 and 1,978.11

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Solution

The fourth proportional to 3,394.13, 4,683.51 and 1,978.11 is: 2,729.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,394.13 : 4,683.51 = 1,978.11 : x
  2. Step 2: Convert to fraction form
    3,394.13/4,683.51 = 1,978.11/x
  3. Step 3: Cross multiply
    3,394.13x = 4,683.51 × 1,978.11
  4. Step 4: Simplify right side
    3,394.13x = 9,264,497.97
  5. Step 5: Solve for x
    x = 9,264,497.97/3,394.13
  6. Step 6: Final answer
    x = 2,729.57

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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.