Home / 1,851.60-2,775.80-985.04

Finding the Fourth Proportional to 1,851.60, 2,775.80 and 985.04

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Solution

The fourth proportional to 1,851.60, 2,775.80 and 985.04 is: 1,476.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,851.60 : 2,775.80 = 985.04 : x
  2. Step 2: Convert to fraction form
    1,851.60/2,775.80 = 985.04/x
  3. Step 3: Cross multiply
    1,851.60x = 2,775.80 × 985.04
  4. Step 4: Simplify right side
    1,851.60x = 2,734,274.03
  5. Step 5: Solve for x
    x = 2,734,274.03/1,851.60
  6. Step 6: Final answer
    x = 1,476.71

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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.