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Finding the Fourth Proportional to 6,275.89, 8,657.13 and 3,913.93

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Solution

The fourth proportional to 6,275.89, 8,657.13 and 3,913.93 is: 5,398.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,275.89 : 8,657.13 = 3,913.93 : x
  2. Step 2: Convert to fraction form
    6,275.89/8,657.13 = 3,913.93/x
  3. Step 3: Cross multiply
    6,275.89x = 8,657.13 × 3,913.93
  4. Step 4: Simplify right side
    6,275.89x = 33,883,400.82
  5. Step 5: Solve for x
    x = 33,883,400.82/6,275.89
  6. Step 6: Final answer
    x = 5,398.98

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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.