Home / 1,986.95-2,742.02-1,102.77

Finding the Fourth Proportional to 1,986.95, 2,742.02 and 1,102.77

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Solution

The fourth proportional to 1,986.95, 2,742.02 and 1,102.77 is: 1,521.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,986.95 : 2,742.02 = 1,102.77 : x
  2. Step 2: Convert to fraction form
    1,986.95/2,742.02 = 1,102.77/x
  3. Step 3: Cross multiply
    1,986.95x = 2,742.02 × 1,102.77
  4. Step 4: Simplify right side
    1,986.95x = 3,023,817.40
  5. Step 5: Solve for x
    x = 3,023,817.40/1,986.95
  6. Step 6: Final answer
    x = 1,521.84

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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.