Home / 7,255.40-10,875.74-2,811.87

Finding the Fourth Proportional to 7,255.40, 10,875.74 and 2,811.87

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Solution

The fourth proportional to 7,255.40, 10,875.74 and 2,811.87 is: 4,214.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,255.40 : 10,875.74 = 2,811.87 : x
  2. Step 2: Convert to fraction form
    7,255.40/10,875.74 = 2,811.87/x
  3. Step 3: Cross multiply
    7,255.40x = 10,875.74 × 2,811.87
  4. Step 4: Simplify right side
    7,255.40x = 30,581,152.97
  5. Step 5: Solve for x
    x = 30,581,152.97/7,255.40
  6. Step 6: Final answer
    x = 4,214.95

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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.