Home / 3,325.19-4,987.78-1,679.47

Finding the Fourth Proportional to 3,325.19, 4,987.78 and 1,679.47

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Solution

The fourth proportional to 3,325.19, 4,987.78 and 1,679.47 is: 2,519.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,325.19 : 4,987.78 = 1,679.47 : x
  2. Step 2: Convert to fraction form
    3,325.19/4,987.78 = 1,679.47/x
  3. Step 3: Cross multiply
    3,325.19x = 4,987.78 × 1,679.47
  4. Step 4: Simplify right side
    3,325.19x = 8,376,810.21
  5. Step 5: Solve for x
    x = 8,376,810.21/3,325.19
  6. Step 6: Final answer
    x = 2,519.20

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1.5x scale

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.