Home / 1,739.02-2,611.64-1,277.72

Finding the Fourth Proportional to 1,739.02, 2,611.64 and 1,277.72

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Solution

The fourth proportional to 1,739.02, 2,611.64 and 1,277.72 is: 1,918.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,739.02 : 2,611.64 = 1,277.72 : x
  2. Step 2: Convert to fraction form
    1,739.02/2,611.64 = 1,277.72/x
  3. Step 3: Cross multiply
    1,739.02x = 2,611.64 × 1,277.72
  4. Step 4: Simplify right side
    1,739.02x = 3,336,959.28
  5. Step 5: Solve for x
    x = 3,336,959.28/1,739.02
  6. Step 6: Final answer
    x = 1,918.87

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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.