Home / 7,881.03-10,872.09-5,195.07

Finding the Fourth Proportional to 7,881.03, 10,872.09 and 5,195.07

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Solution

The fourth proportional to 7,881.03, 10,872.09 and 5,195.07 is: 7,166.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,881.03 : 10,872.09 = 5,195.07 : x
  2. Step 2: Convert to fraction form
    7,881.03/10,872.09 = 5,195.07/x
  3. Step 3: Cross multiply
    7,881.03x = 10,872.09 × 5,195.07
  4. Step 4: Simplify right side
    7,881.03x = 56,481,268.60
  5. Step 5: Solve for x
    x = 56,481,268.60/7,881.03
  6. Step 6: Final answer
    x = 7,166.74

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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.