Home / 7,212.90-10,820.42-2,280.94

Finding the Fourth Proportional to 7,212.90, 10,820.42 and 2,280.94

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Solution

The fourth proportional to 7,212.90, 10,820.42 and 2,280.94 is: 3,421.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,212.90 : 10,820.42 = 2,280.94 : x
  2. Step 2: Convert to fraction form
    7,212.90/10,820.42 = 2,280.94/x
  3. Step 3: Cross multiply
    7,212.90x = 10,820.42 × 2,280.94
  4. Step 4: Simplify right side
    7,212.90x = 24,680,728.79
  5. Step 5: Solve for x
    x = 24,680,728.79/7,212.90
  6. Step 6: Final answer
    x = 3,421.75

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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.