Home / 9,410.77-12,986.10-5,161.75

Finding the Fourth Proportional to 9,410.77, 12,986.10 and 5,161.75

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Solution

The fourth proportional to 9,410.77, 12,986.10 and 5,161.75 is: 7,122.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,410.77 : 12,986.10 = 5,161.75 : x
  2. Step 2: Convert to fraction form
    9,410.77/12,986.10 = 5,161.75/x
  3. Step 3: Cross multiply
    9,410.77x = 12,986.10 × 5,161.75
  4. Step 4: Simplify right side
    9,410.77x = 67,031,001.68
  5. Step 5: Solve for x
    x = 67,031,001.68/9,410.77
  6. Step 6: Final answer
    x = 7,122.80

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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.