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Finding the Fourth Proportional to 7,881.12, 10,797.09 and 7,585.68

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Solution

The fourth proportional to 7,881.12, 10,797.09 and 7,585.68 is: 10,392.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,881.12 : 10,797.09 = 7,585.68 : x
  2. Step 2: Convert to fraction form
    7,881.12/10,797.09 = 7,585.68/x
  3. Step 3: Cross multiply
    7,881.12x = 10,797.09 × 7,585.68
  4. Step 4: Simplify right side
    7,881.12x = 81,903,269.67
  5. Step 5: Solve for x
    x = 81,903,269.67/7,881.12
  6. Step 6: Final answer
    x = 10,392.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.