Home / 7,119.60-10,680.51-3,421.14

Finding the Fourth Proportional to 7,119.60, 10,680.51 and 3,421.14

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Solution

The fourth proportional to 7,119.60, 10,680.51 and 3,421.14 is: 5,132.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,119.60 : 10,680.51 = 3,421.14 : x
  2. Step 2: Convert to fraction form
    7,119.60/10,680.51 = 3,421.14/x
  3. Step 3: Cross multiply
    7,119.60x = 10,680.51 × 3,421.14
  4. Step 4: Simplify right side
    7,119.60x = 36,539,519.98
  5. Step 5: Solve for x
    x = 36,539,519.98/7,119.60
  6. Step 6: Final answer
    x = 5,132.24

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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.