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Finding the Fourth Proportional to 2,669, 3,683.76 and 1,550.18

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Solution

The fourth proportional to 2,669, 3,683.76 and 1,550.18 is: 2,139.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,669 : 3,683.76 = 1,550.18 : x
  2. Step 2: Convert to fraction form
    2,669/3,683.76 = 1,550.18/x
  3. Step 3: Cross multiply
    2,669x = 3,683.76 × 1,550.18
  4. Step 4: Simplify right side
    2,669x = 5,710,491.08
  5. Step 5: Solve for x
    x = 5,710,491.08/2,669
  6. Step 6: Final answer
    x = 2,139.56

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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.