Home / 3,289.02-4,927.95-1,987.75

Finding the Fourth Proportional to 3,289.02, 4,927.95 and 1,987.75

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Solution

The fourth proportional to 3,289.02, 4,927.95 and 1,987.75 is: 2,978.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,289.02 : 4,927.95 = 1,987.75 : x
  2. Step 2: Convert to fraction form
    3,289.02/4,927.95 = 1,987.75/x
  3. Step 3: Cross multiply
    3,289.02x = 4,927.95 × 1,987.75
  4. Step 4: Simplify right side
    3,289.02x = 9,795,532.61
  5. Step 5: Solve for x
    x = 9,795,532.61/3,289.02
  6. Step 6: Final answer
    x = 2,978.25

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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.