Home / 5,121.52-7,683.84-2,658.10

Finding the Fourth Proportional to 5,121.52, 7,683.84 and 2,658.10

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Solution

The fourth proportional to 5,121.52, 7,683.84 and 2,658.10 is: 3,987.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,121.52 : 7,683.84 = 2,658.10 : x
  2. Step 2: Convert to fraction form
    5,121.52/7,683.84 = 2,658.10/x
  3. Step 3: Cross multiply
    5,121.52x = 7,683.84 × 2,658.10
  4. Step 4: Simplify right side
    5,121.52x = 20,424,415.10
  5. Step 5: Solve for x
    x = 20,424,415.10/5,121.52
  6. Step 6: Final answer
    x = 3,987.96

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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.