Home / 3,397.09-4,690.98-2,140.39

Finding the Fourth Proportional to 3,397.09, 4,690.98 and 2,140.39

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Solution

The fourth proportional to 3,397.09, 4,690.98 and 2,140.39 is: 2,955.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,397.09 : 4,690.98 = 2,140.39 : x
  2. Step 2: Convert to fraction form
    3,397.09/4,690.98 = 2,140.39/x
  3. Step 3: Cross multiply
    3,397.09x = 4,690.98 × 2,140.39
  4. Step 4: Simplify right side
    3,397.09x = 10,040,526.68
  5. Step 5: Solve for x
    x = 10,040,526.68/3,397.09
  6. Step 6: Final answer
    x = 2,955.63

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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.