Home / 2,309.80-3,184.60-1,679.84

Finding the Fourth Proportional to 2,309.80, 3,184.60 and 1,679.84

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Solution

The fourth proportional to 2,309.80, 3,184.60 and 1,679.84 is: 2,316.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,309.80 : 3,184.60 = 1,679.84 : x
  2. Step 2: Convert to fraction form
    2,309.80/3,184.60 = 1,679.84/x
  3. Step 3: Cross multiply
    2,309.80x = 3,184.60 × 1,679.84
  4. Step 4: Simplify right side
    2,309.80x = 5,349,618.46
  5. Step 5: Solve for x
    x = 5,349,618.46/2,309.80
  6. Step 6: Final answer
    x = 2,316.05

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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.