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Finding the Fourth Proportional to 2,686.69, 4,024.80 and 1,513.11

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Solution

The fourth proportional to 2,686.69, 4,024.80 and 1,513.11 is: 2,266.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,686.69 : 4,024.80 = 1,513.11 : x
  2. Step 2: Convert to fraction form
    2,686.69/4,024.80 = 1,513.11/x
  3. Step 3: Cross multiply
    2,686.69x = 4,024.80 × 1,513.11
  4. Step 4: Simplify right side
    2,686.69x = 6,089,965.13
  5. Step 5: Solve for x
    x = 6,089,965.13/2,686.69
  6. Step 6: Final answer
    x = 2,266.72

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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.