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Finding the Fourth Proportional to 7,765.78, 10,717.04 and 4,363.39

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Solution

The fourth proportional to 7,765.78, 10,717.04 and 4,363.39 is: 6,021.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,765.78 : 10,717.04 = 4,363.39 : x
  2. Step 2: Convert to fraction form
    7,765.78/10,717.04 = 4,363.39/x
  3. Step 3: Cross multiply
    7,765.78x = 10,717.04 × 4,363.39
  4. Step 4: Simplify right side
    7,765.78x = 46,762,625.17
  5. Step 5: Solve for x
    x = 46,762,625.17/7,765.78
  6. Step 6: Final answer
    x = 6,021.63

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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.