Home / 1,214.24-1,821.04-348.60

Finding the Fourth Proportional to 1,214.24, 1,821.04 and 348.60

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Solution

The fourth proportional to 1,214.24, 1,821.04 and 348.60 is: 522.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,214.24 : 1,821.04 = 348.60 : x
  2. Step 2: Convert to fraction form
    1,214.24/1,821.04 = 348.60/x
  3. Step 3: Cross multiply
    1,214.24x = 1,821.04 × 348.60
  4. Step 4: Simplify right side
    1,214.24x = 634,814.54
  5. Step 5: Solve for x
    x = 634,814.54/1,214.24
  6. Step 6: Final answer
    x = 522.81

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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.