Home / 2,761.02-3,811.61-2,130.13

Finding the Fourth Proportional to 2,761.02, 3,811.61 and 2,130.13

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Solution

The fourth proportional to 2,761.02, 3,811.61 and 2,130.13 is: 2,940.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,761.02 : 3,811.61 = 2,130.13 : x
  2. Step 2: Convert to fraction form
    2,761.02/3,811.61 = 2,130.13/x
  3. Step 3: Cross multiply
    2,761.02x = 3,811.61 × 2,130.13
  4. Step 4: Simplify right side
    2,761.02x = 8,119,234.90
  5. Step 5: Solve for x
    x = 8,119,234.90/2,761.02
  6. Step 6: Final answer
    x = 2,940.67

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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.