Home / 5,078.16-7,621.09-2,158.52

Finding the Fourth Proportional to 5,078.16, 7,621.09 and 2,158.52

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Solution

The fourth proportional to 5,078.16, 7,621.09 and 2,158.52 is: 3,239.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,078.16 : 7,621.09 = 2,158.52 : x
  2. Step 2: Convert to fraction form
    5,078.16/7,621.09 = 2,158.52/x
  3. Step 3: Cross multiply
    5,078.16x = 7,621.09 × 2,158.52
  4. Step 4: Simplify right side
    5,078.16x = 16,450,231.69
  5. Step 5: Solve for x
    x = 16,450,231.69/5,078.16
  6. Step 6: Final answer
    x = 3,239.41

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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.