Home / 8,811.31-13,191.36-6,857.59

Finding the Fourth Proportional to 8,811.31, 13,191.36 and 6,857.59

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Solution

The fourth proportional to 8,811.31, 13,191.36 and 6,857.59 is: 10,266.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,811.31 : 13,191.36 = 6,857.59 : x
  2. Step 2: Convert to fraction form
    8,811.31/13,191.36 = 6,857.59/x
  3. Step 3: Cross multiply
    8,811.31x = 13,191.36 × 6,857.59
  4. Step 4: Simplify right side
    8,811.31x = 90,460,938.42
  5. Step 5: Solve for x
    x = 90,460,938.42/8,811.31
  6. Step 6: Final answer
    x = 10,266.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.