Home / 5,121.60-7,682.40-4,908.24

Finding the Fourth Proportional to 5,121.60, 7,682.40 and 4,908.24

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Solution

The fourth proportional to 5,121.60, 7,682.40 and 4,908.24 is: 7,362.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,121.60 : 7,682.40 = 4,908.24 : x
  2. Step 2: Convert to fraction form
    5,121.60/7,682.40 = 4,908.24/x
  3. Step 3: Cross multiply
    5,121.60x = 7,682.40 × 4,908.24
  4. Step 4: Simplify right side
    5,121.60x = 37,707,062.98
  5. Step 5: Solve for x
    x = 37,707,062.98/5,121.60
  6. Step 6: Final answer
    x = 7,362.36

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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.