Home / 8,161.77-12,242.31-2,615.40

Finding the Fourth Proportional to 8,161.77, 12,242.31 and 2,615.40

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Solution

The fourth proportional to 8,161.77, 12,242.31 and 2,615.40 is: 3,922.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,161.77 : 12,242.31 = 2,615.40 : x
  2. Step 2: Convert to fraction form
    8,161.77/12,242.31 = 2,615.40/x
  3. Step 3: Cross multiply
    8,161.77x = 12,242.31 × 2,615.40
  4. Step 4: Simplify right side
    8,161.77x = 32,018,527.77
  5. Step 5: Solve for x
    x = 32,018,527.77/8,161.77
  6. Step 6: Final answer
    x = 3,922.99

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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.