Home / 1,860.64-2,791.05-1,315.25

Finding the Fourth Proportional to 1,860.64, 2,791.05 and 1,315.25

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Solution

The fourth proportional to 1,860.64, 2,791.05 and 1,315.25 is: 1,972.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,860.64 : 2,791.05 = 1,315.25 : x
  2. Step 2: Convert to fraction form
    1,860.64/2,791.05 = 1,315.25/x
  3. Step 3: Cross multiply
    1,860.64x = 2,791.05 × 1,315.25
  4. Step 4: Simplify right side
    1,860.64x = 3,670,928.51
  5. Step 5: Solve for x
    x = 3,670,928.51/1,860.64
  6. Step 6: Final answer
    x = 1,972.94

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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.