Home / 1,955.12-2,697.52-1,291.76

Finding the Fourth Proportional to 1,955.12, 2,697.52 and 1,291.76

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Solution

The fourth proportional to 1,955.12, 2,697.52 and 1,291.76 is: 1,782.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,955.12 : 2,697.52 = 1,291.76 : x
  2. Step 2: Convert to fraction form
    1,955.12/2,697.52 = 1,291.76/x
  3. Step 3: Cross multiply
    1,955.12x = 2,697.52 × 1,291.76
  4. Step 4: Simplify right side
    1,955.12x = 3,484,548.44
  5. Step 5: Solve for x
    x = 3,484,548.44/1,955.12
  6. Step 6: Final answer
    x = 1,782.27

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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.