Home / 7,119.20-10,657.20-5,376.80

Finding the Fourth Proportional to 7,119.20, 10,657.20 and 5,376.80

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Solution

The fourth proportional to 7,119.20, 10,657.20 and 5,376.80 is: 8,048.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,119.20 : 10,657.20 = 5,376.80 : x
  2. Step 2: Convert to fraction form
    7,119.20/10,657.20 = 5,376.80/x
  3. Step 3: Cross multiply
    7,119.20x = 10,657.20 × 5,376.80
  4. Step 4: Simplify right side
    7,119.20x = 57,301,632.96
  5. Step 5: Solve for x
    x = 57,301,632.96/7,119.20
  6. Step 6: Final answer
    x = 8,048.89

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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.