Home / 3,411.95-4,708.31-1,920.11

Finding the Fourth Proportional to 3,411.95, 4,708.31 and 1,920.11

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Solution

The fourth proportional to 3,411.95, 4,708.31 and 1,920.11 is: 2,649.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,411.95 : 4,708.31 = 1,920.11 : x
  2. Step 2: Convert to fraction form
    3,411.95/4,708.31 = 1,920.11/x
  3. Step 3: Cross multiply
    3,411.95x = 4,708.31 × 1,920.11
  4. Step 4: Simplify right side
    3,411.95x = 9,040,439.97
  5. Step 5: Solve for x
    x = 9,040,439.97/3,411.95
  6. Step 6: Final answer
    x = 2,649.64

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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.