Home / 3,097.85-4,275.28-1,918.69

Finding the Fourth Proportional to 3,097.85, 4,275.28 and 1,918.69

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Solution

The fourth proportional to 3,097.85, 4,275.28 and 1,918.69 is: 2,647.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,097.85 : 4,275.28 = 1,918.69 : x
  2. Step 2: Convert to fraction form
    3,097.85/4,275.28 = 1,918.69/x
  3. Step 3: Cross multiply
    3,097.85x = 4,275.28 × 1,918.69
  4. Step 4: Simplify right side
    3,097.85x = 8,202,928.69
  5. Step 5: Solve for x
    x = 8,202,928.69/3,097.85
  6. Step 6: Final answer
    x = 2,647.95

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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.