Home / 1,081.65-1,621.82-351.14

Finding the Fourth Proportional to 1,081.65, 1,621.82 and 351.14

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Solution

The fourth proportional to 1,081.65, 1,621.82 and 351.14 is: 526.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,081.65 : 1,621.82 = 351.14 : x
  2. Step 2: Convert to fraction form
    1,081.65/1,621.82 = 351.14/x
  3. Step 3: Cross multiply
    1,081.65x = 1,621.82 × 351.14
  4. Step 4: Simplify right side
    1,081.65x = 569,478.64
  5. Step 5: Solve for x
    x = 569,478.64/1,081.65
  6. Step 6: Final answer
    x = 526.49

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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.