Home / 6,987.72-10,474.02-3,287.64

Finding the Fourth Proportional to 6,987.72, 10,474.02 and 3,287.64

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Solution

The fourth proportional to 6,987.72, 10,474.02 and 3,287.64 is: 4,927.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,987.72 : 10,474.02 = 3,287.64 : x
  2. Step 2: Convert to fraction form
    6,987.72/10,474.02 = 3,287.64/x
  3. Step 3: Cross multiply
    6,987.72x = 10,474.02 × 3,287.64
  4. Step 4: Simplify right side
    6,987.72x = 34,434,807.11
  5. Step 5: Solve for x
    x = 34,434,807.11/6,987.72
  6. Step 6: Final answer
    x = 4,927.90

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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.