Home / 1,487.73-2,051.22-1,221.84

Finding the Fourth Proportional to 1,487.73, 2,051.22 and 1,221.84

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Solution

The fourth proportional to 1,487.73, 2,051.22 and 1,221.84 is: 1,684.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,487.73 : 2,051.22 = 1,221.84 : x
  2. Step 2: Convert to fraction form
    1,487.73/2,051.22 = 1,221.84/x
  3. Step 3: Cross multiply
    1,487.73x = 2,051.22 × 1,221.84
  4. Step 4: Simplify right side
    1,487.73x = 2,506,262.64
  5. Step 5: Solve for x
    x = 2,506,262.64/1,487.73
  6. Step 6: Final answer
    x = 1,684.62

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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.