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Finding the Fourth Proportional to 7,903.51, 10,909.17 and 4,917.85

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Solution

The fourth proportional to 7,903.51, 10,909.17 and 4,917.85 is: 6,788.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,903.51 : 10,909.17 = 4,917.85 : x
  2. Step 2: Convert to fraction form
    7,903.51/10,909.17 = 4,917.85/x
  3. Step 3: Cross multiply
    7,903.51x = 10,909.17 × 4,917.85
  4. Step 4: Simplify right side
    7,903.51x = 53,649,661.68
  5. Step 5: Solve for x
    x = 53,649,661.68/7,903.51
  6. Step 6: Final answer
    x = 6,788.08

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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.