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Finding the Fourth Proportional to 7,909.78, 10,917.54 and 4,552.93

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Solution

The fourth proportional to 7,909.78, 10,917.54 and 4,552.93 is: 6,284.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,909.78 : 10,917.54 = 4,552.93 : x
  2. Step 2: Convert to fraction form
    7,909.78/10,917.54 = 4,552.93/x
  3. Step 3: Cross multiply
    7,909.78x = 10,917.54 × 4,552.93
  4. Step 4: Simplify right side
    7,909.78x = 49,706,795.39
  5. Step 5: Solve for x
    x = 49,706,795.39/7,909.78
  6. Step 6: Final answer
    x = 6,284.22

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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.