Home / 7,175.40-10,771.20-5,539.20

Finding the Fourth Proportional to 7,175.40, 10,771.20 and 5,539.20

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Solution

The fourth proportional to 7,175.40, 10,771.20 and 5,539.20 is: 8,315.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,175.40 : 10,771.20 = 5,539.20 : x
  2. Step 2: Convert to fraction form
    7,175.40/10,771.20 = 5,539.20/x
  3. Step 3: Cross multiply
    7,175.40x = 10,771.20 × 5,539.20
  4. Step 4: Simplify right side
    7,175.40x = 59,663,831.04
  5. Step 5: Solve for x
    x = 59,663,831.04/7,175.40
  6. Step 6: Final answer
    x = 8,315.05

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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.