Home / 7,220.81-10,811.65-3,750.77

Finding the Fourth Proportional to 7,220.81, 10,811.65 and 3,750.77

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Solution

The fourth proportional to 7,220.81, 10,811.65 and 3,750.77 is: 5,615.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,220.81 : 10,811.65 = 3,750.77 : x
  2. Step 2: Convert to fraction form
    7,220.81/10,811.65 = 3,750.77/x
  3. Step 3: Cross multiply
    7,220.81x = 10,811.65 × 3,750.77
  4. Step 4: Simplify right side
    7,220.81x = 40,551,958.41
  5. Step 5: Solve for x
    x = 40,551,958.41/7,220.81
  6. Step 6: Final answer
    x = 5,615.99

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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.