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Finding the Fourth Proportional to 1,799.65, 2,483.13 and 1,211.91

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Solution

The fourth proportional to 1,799.65, 2,483.13 and 1,211.91 is: 1,672.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,799.65 : 2,483.13 = 1,211.91 : x
  2. Step 2: Convert to fraction form
    1,799.65/2,483.13 = 1,211.91/x
  3. Step 3: Cross multiply
    1,799.65x = 2,483.13 × 1,211.91
  4. Step 4: Simplify right side
    1,799.65x = 3,009,330.08
  5. Step 5: Solve for x
    x = 3,009,330.08/1,799.65
  6. Step 6: Final answer
    x = 1,672.18

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.