Home / 3,023.72-4,172.95-1,679.40

Finding the Fourth Proportional to 3,023.72, 4,172.95 and 1,679.40

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Solution

The fourth proportional to 3,023.72, 4,172.95 and 1,679.40 is: 2,317.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,023.72 : 4,172.95 = 1,679.40 : x
  2. Step 2: Convert to fraction form
    3,023.72/4,172.95 = 1,679.40/x
  3. Step 3: Cross multiply
    3,023.72x = 4,172.95 × 1,679.40
  4. Step 4: Simplify right side
    3,023.72x = 7,008,052.23
  5. Step 5: Solve for x
    x = 7,008,052.23/3,023.72
  6. Step 6: Final answer
    x = 2,317.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.