Home / 2,989.02-4,483.55-1,687.75

Finding the Fourth Proportional to 2,989.02, 4,483.55 and 1,687.75

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Solution

The fourth proportional to 2,989.02, 4,483.55 and 1,687.75 is: 2,531.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,989.02 : 4,483.55 = 1,687.75 : x
  2. Step 2: Convert to fraction form
    2,989.02/4,483.55 = 1,687.75/x
  3. Step 3: Cross multiply
    2,989.02x = 4,483.55 × 1,687.75
  4. Step 4: Simplify right side
    2,989.02x = 7,567,111.51
  5. Step 5: Solve for x
    x = 7,567,111.51/2,989.02
  6. Step 6: Final answer
    x = 2,531.64

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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.