Home / 2,058.39-2,839.45-1,311.03

Finding the Fourth Proportional to 2,058.39, 2,839.45 and 1,311.03

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Solution

The fourth proportional to 2,058.39, 2,839.45 and 1,311.03 is: 1,808.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,058.39 : 2,839.45 = 1,311.03 : x
  2. Step 2: Convert to fraction form
    2,058.39/2,839.45 = 1,311.03/x
  3. Step 3: Cross multiply
    2,058.39x = 2,839.45 × 1,311.03
  4. Step 4: Simplify right side
    2,058.39x = 3,722,604.13
  5. Step 5: Solve for x
    x = 3,722,604.13/2,058.39
  6. Step 6: Final answer
    x = 1,808.50

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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.