Home / 2,129.56-3,195.15-1,090.06

Finding the Fourth Proportional to 2,129.56, 3,195.15 and 1,090.06

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Solution

The fourth proportional to 2,129.56, 3,195.15 and 1,090.06 is: 1,635.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,129.56 : 3,195.15 = 1,090.06 : x
  2. Step 2: Convert to fraction form
    2,129.56/3,195.15 = 1,090.06/x
  3. Step 3: Cross multiply
    2,129.56x = 3,195.15 × 1,090.06
  4. Step 4: Simplify right side
    2,129.56x = 3,482,905.21
  5. Step 5: Solve for x
    x = 3,482,905.21/2,129.56
  6. Step 6: Final answer
    x = 1,635.50

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Half scale
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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.