Home / 1,214.46-1,821.69-348.75

Finding the Fourth Proportional to 1,214.46, 1,821.69 and 348.75

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Solution

The fourth proportional to 1,214.46, 1,821.69 and 348.75 is: 523.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,214.46 : 1,821.69 = 348.75 : x
  2. Step 2: Convert to fraction form
    1,214.46/1,821.69 = 348.75/x
  3. Step 3: Cross multiply
    1,214.46x = 1,821.69 × 348.75
  4. Step 4: Simplify right side
    1,214.46x = 635,314.39
  5. Step 5: Solve for x
    x = 635,314.39/1,214.46
  6. Step 6: Final answer
    x = 523.13

Related Problems

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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.