Home / 6,871.78-10,307.15-2,191.60

Finding the Fourth Proportional to 6,871.78, 10,307.15 and 2,191.60

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Solution

The fourth proportional to 6,871.78, 10,307.15 and 2,191.60 is: 3,287.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,871.78 : 10,307.15 = 2,191.60 : x
  2. Step 2: Convert to fraction form
    6,871.78/10,307.15 = 2,191.60/x
  3. Step 3: Cross multiply
    6,871.78x = 10,307.15 × 2,191.60
  4. Step 4: Simplify right side
    6,871.78x = 22,589,172.41
  5. Step 5: Solve for x
    x = 22,589,172.41/6,871.78
  6. Step 6: Final answer
    x = 3,287.24

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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.