Home / 3,108.11-4,287.30-1,848.32

Finding the Fourth Proportional to 3,108.11, 4,287.30 and 1,848.32

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Solution

The fourth proportional to 3,108.11, 4,287.30 and 1,848.32 is: 2,549.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,108.11 : 4,287.30 = 1,848.32 : x
  2. Step 2: Convert to fraction form
    3,108.11/4,287.30 = 1,848.32/x
  3. Step 3: Cross multiply
    3,108.11x = 4,287.30 × 1,848.32
  4. Step 4: Simplify right side
    3,108.11x = 7,924,290.05
  5. Step 5: Solve for x
    x = 7,924,290.05/3,108.11
  6. Step 6: Final answer
    x = 2,549.56

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Half scale
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Double scale
Find fourth proportional to 3,109.11, 4,288.68 and 1,849.32
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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.