Home / 2,190.65-3,284.28-1,095.78

Finding the Fourth Proportional to 2,190.65, 3,284.28 and 1,095.78

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Solution

The fourth proportional to 2,190.65, 3,284.28 and 1,095.78 is: 1,642.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,190.65 : 3,284.28 = 1,095.78 : x
  2. Step 2: Convert to fraction form
    2,190.65/3,284.28 = 1,095.78/x
  3. Step 3: Cross multiply
    2,190.65x = 3,284.28 × 1,095.78
  4. Step 4: Simplify right side
    2,190.65x = 3,598,848.34
  5. Step 5: Solve for x
    x = 3,598,848.34/2,190.65
  6. Step 6: Final answer
    x = 1,642.83

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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.