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Finding the Fourth Proportional to 7,881.25, 10,875.84 and 4,344.25

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Solution

The fourth proportional to 7,881.25, 10,875.84 and 4,344.25 is: 5,994.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,881.25 : 10,875.84 = 4,344.25 : x
  2. Step 2: Convert to fraction form
    7,881.25/10,875.84 = 4,344.25/x
  3. Step 3: Cross multiply
    7,881.25x = 10,875.84 × 4,344.25
  4. Step 4: Simplify right side
    7,881.25x = 47,247,367.92
  5. Step 5: Solve for x
    x = 47,247,367.92/7,881.25
  6. Step 6: Final answer
    x = 5,994.91

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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.