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Finding the Fourth Proportional to 6,709.72, 9,259.74 and 3,877.47

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Solution

The fourth proportional to 6,709.72, 9,259.74 and 3,877.47 is: 5,351.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,709.72 : 9,259.74 = 3,877.47 : x
  2. Step 2: Convert to fraction form
    6,709.72/9,259.74 = 3,877.47/x
  3. Step 3: Cross multiply
    6,709.72x = 9,259.74 × 3,877.47
  4. Step 4: Simplify right side
    6,709.72x = 35,904,391.51
  5. Step 5: Solve for x
    x = 35,904,391.51/6,709.72
  6. Step 6: Final answer
    x = 5,351.10

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1.5x scale

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.