Home / 2,991.02-4,486.55-1,689.75

Finding the Fourth Proportional to 2,991.02, 4,486.55 and 1,689.75

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Solution

The fourth proportional to 2,991.02, 4,486.55 and 1,689.75 is: 2,534.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,991.02 : 4,486.55 = 1,689.75 : x
  2. Step 2: Convert to fraction form
    2,991.02/4,486.55 = 1,689.75/x
  3. Step 3: Cross multiply
    2,991.02x = 4,486.55 × 1,689.75
  4. Step 4: Simplify right side
    2,991.02x = 7,581,147.86
  5. Step 5: Solve for x
    x = 7,581,147.86/2,991.02
  6. Step 6: Final answer
    x = 2,534.64

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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.