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Finding the Fourth Proportional to 2,509.88, 3,463.80 and 2,309

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Solution

The fourth proportional to 2,509.88, 3,463.80 and 2,309 is: 3,186.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,509.88 : 3,463.80 = 2,309 : x
  2. Step 2: Convert to fraction form
    2,509.88/3,463.80 = 2,309/x
  3. Step 3: Cross multiply
    2,509.88x = 3,463.80 × 2,309
  4. Step 4: Simplify right side
    2,509.88x = 7,997,914.20
  5. Step 5: Solve for x
    x = 7,997,914.20/2,509.88
  6. Step 6: Final answer
    x = 3,186.57

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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.