Home / 2,987.02-4,474.05-1,888.66

Finding the Fourth Proportional to 2,987.02, 4,474.05 and 1,888.66

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Solution

The fourth proportional to 2,987.02, 4,474.05 and 1,888.66 is: 2,828.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,987.02 : 4,474.05 = 1,888.66 : x
  2. Step 2: Convert to fraction form
    2,987.02/4,474.05 = 1,888.66/x
  3. Step 3: Cross multiply
    2,987.02x = 4,474.05 × 1,888.66
  4. Step 4: Simplify right side
    2,987.02x = 8,449,959.27
  5. Step 5: Solve for x
    x = 8,449,959.27/2,987.02
  6. Step 6: Final answer
    x = 2,828.89

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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.