Home / 2,656.90-3,987.24-1,197.28

Finding the Fourth Proportional to 2,656.90, 3,987.24 and 1,197.28

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Solution

The fourth proportional to 2,656.90, 3,987.24 and 1,197.28 is: 1,796.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,656.90 : 3,987.24 = 1,197.28 : x
  2. Step 2: Convert to fraction form
    2,656.90/3,987.24 = 1,197.28/x
  3. Step 3: Cross multiply
    2,656.90x = 3,987.24 × 1,197.28
  4. Step 4: Simplify right side
    2,656.90x = 4,773,842.71
  5. Step 5: Solve for x
    x = 4,773,842.71/2,656.90
  6. Step 6: Final answer
    x = 1,796.77

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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.