Home / 3,389.36-4,681.80-2,728.70

Finding the Fourth Proportional to 3,389.36, 4,681.80 and 2,728.70

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Solution

The fourth proportional to 3,389.36, 4,681.80 and 2,728.70 is: 3,769.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,389.36 : 4,681.80 = 2,728.70 : x
  2. Step 2: Convert to fraction form
    3,389.36/4,681.80 = 2,728.70/x
  3. Step 3: Cross multiply
    3,389.36x = 4,681.80 × 2,728.70
  4. Step 4: Simplify right side
    3,389.36x = 12,775,227.66
  5. Step 5: Solve for x
    x = 12,775,227.66/3,389.36
  6. Step 6: Final answer
    x = 3,769.22

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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.