Home / 1,214.86-1,823.82-1,011.90

Finding the Fourth Proportional to 1,214.86, 1,823.82 and 1,011.90

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Solution

The fourth proportional to 1,214.86, 1,823.82 and 1,011.90 is: 1,519.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,214.86 : 1,823.82 = 1,011.90 : x
  2. Step 2: Convert to fraction form
    1,214.86/1,823.82 = 1,011.90/x
  3. Step 3: Cross multiply
    1,214.86x = 1,823.82 × 1,011.90
  4. Step 4: Simplify right side
    1,214.86x = 1,845,523.46
  5. Step 5: Solve for x
    x = 1,845,523.46/1,214.86
  6. Step 6: Final answer
    x = 1,519.12

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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.