Home / 3,101.32-4,279.87-1,685.00

Finding the Fourth Proportional to 3,101.32, 4,279.87 and 1,685.00

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Solution

The fourth proportional to 3,101.32, 4,279.87 and 1,685.00 is: 2,325.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,101.32 : 4,279.87 = 1,685.00 : x
  2. Step 2: Convert to fraction form
    3,101.32/4,279.87 = 1,685.00/x
  3. Step 3: Cross multiply
    3,101.32x = 4,279.87 × 1,685.00
  4. Step 4: Simplify right side
    3,101.32x = 7,211,587.44
  5. Step 5: Solve for x
    x = 7,211,587.44/3,101.32
  6. Step 6: Final answer
    x = 2,325.33

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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.