Home / 7,968.21-11,951.69-2,421.57

Finding the Fourth Proportional to 7,968.21, 11,951.69 and 2,421.57

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Solution

The fourth proportional to 7,968.21, 11,951.69 and 2,421.57 is: 3,632.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,968.21 : 11,951.69 = 2,421.57 : x
  2. Step 2: Convert to fraction form
    7,968.21/11,951.69 = 2,421.57/x
  3. Step 3: Cross multiply
    7,968.21x = 11,951.69 × 2,421.57
  4. Step 4: Simplify right side
    7,968.21x = 28,941,886.66
  5. Step 5: Solve for x
    x = 28,941,886.66/7,968.21
  6. Step 6: Final answer
    x = 3,632.17

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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.