Home / 1,775.30-2,659.71-1,287.14

Finding the Fourth Proportional to 1,775.30, 2,659.71 and 1,287.14

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Solution

The fourth proportional to 1,775.30, 2,659.71 and 1,287.14 is: 1,928.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,775.30 : 2,659.71 = 1,287.14 : x
  2. Step 2: Convert to fraction form
    1,775.30/2,659.71 = 1,287.14/x
  3. Step 3: Cross multiply
    1,775.30x = 2,659.71 × 1,287.14
  4. Step 4: Simplify right side
    1,775.30x = 3,423,419.13
  5. Step 5: Solve for x
    x = 3,423,419.13/1,775.30
  6. Step 6: Final answer
    x = 1,928.36

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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.