Home / 2,211.47-3,312.77-1,333.47

Finding the Fourth Proportional to 2,211.47, 3,312.77 and 1,333.47

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Solution

The fourth proportional to 2,211.47, 3,312.77 and 1,333.47 is: 1,997.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,211.47 : 3,312.77 = 1,333.47 : x
  2. Step 2: Convert to fraction form
    2,211.47/3,312.77 = 1,333.47/x
  3. Step 3: Cross multiply
    2,211.47x = 3,312.77 × 1,333.47
  4. Step 4: Simplify right side
    2,211.47x = 4,417,472.74
  5. Step 5: Solve for x
    x = 4,417,472.74/2,211.47
  6. Step 6: Final answer
    x = 1,997.53

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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.