Home / 9,121.46-13,682.21-2,547.81

Finding the Fourth Proportional to 9,121.46, 13,682.21 and 2,547.81

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Solution

The fourth proportional to 9,121.46, 13,682.21 and 2,547.81 is: 3,821.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,121.46 : 13,682.21 = 2,547.81 : x
  2. Step 2: Convert to fraction form
    9,121.46/13,682.21 = 2,547.81/x
  3. Step 3: Cross multiply
    9,121.46x = 13,682.21 × 2,547.81
  4. Step 4: Simplify right side
    9,121.46x = 34,859,658.72
  5. Step 5: Solve for x
    x = 34,859,658.72/9,121.46
  6. Step 6: Final answer
    x = 3,821.72

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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.