Home / 2,180.03-3,008.21-1,283.76

Finding the Fourth Proportional to 2,180.03, 3,008.21 and 1,283.76

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Solution

The fourth proportional to 2,180.03, 3,008.21 and 1,283.76 is: 1,771.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,180.03 : 3,008.21 = 1,283.76 : x
  2. Step 2: Convert to fraction form
    2,180.03/3,008.21 = 1,283.76/x
  3. Step 3: Cross multiply
    2,180.03x = 3,008.21 × 1,283.76
  4. Step 4: Simplify right side
    2,180.03x = 3,861,813.25
  5. Step 5: Solve for x
    x = 3,861,813.25/2,180.03
  6. Step 6: Final answer
    x = 1,771.45

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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.