Home / 9,161.79-13,734.18-3,315.21

Finding the Fourth Proportional to 9,161.79, 13,734.18 and 3,315.21

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Solution

The fourth proportional to 9,161.79, 13,734.18 and 3,315.21 is: 4,969.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,161.79 : 13,734.18 = 3,315.21 : x
  2. Step 2: Convert to fraction form
    9,161.79/13,734.18 = 3,315.21/x
  3. Step 3: Cross multiply
    9,161.79x = 13,734.18 × 3,315.21
  4. Step 4: Simplify right side
    9,161.79x = 45,531,690.88
  5. Step 5: Solve for x
    x = 45,531,690.88/9,161.79
  6. Step 6: Final answer
    x = 4,969.74

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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.