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Finding the Fourth Proportional to 7,762.22, 10,711.88 and 4,225.42

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Solution

The fourth proportional to 7,762.22, 10,711.88 and 4,225.42 is: 5,831.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,762.22 : 10,711.88 = 4,225.42 : x
  2. Step 2: Convert to fraction form
    7,762.22/10,711.88 = 4,225.42/x
  3. Step 3: Cross multiply
    7,762.22x = 10,711.88 × 4,225.42
  4. Step 4: Simplify right side
    7,762.22x = 45,262,191.99
  5. Step 5: Solve for x
    x = 45,262,191.99/7,762.22
  6. Step 6: Final answer
    x = 5,831.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.