Home / 5,389.74-8,078.94-2,102.76

Finding the Fourth Proportional to 5,389.74, 8,078.94 and 2,102.76

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Solution

The fourth proportional to 5,389.74, 8,078.94 and 2,102.76 is: 3,151.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,389.74 : 8,078.94 = 2,102.76 : x
  2. Step 2: Convert to fraction form
    5,389.74/8,078.94 = 2,102.76/x
  3. Step 3: Cross multiply
    5,389.74x = 8,078.94 × 2,102.76
  4. Step 4: Simplify right side
    5,389.74x = 16,988,071.87
  5. Step 5: Solve for x
    x = 16,988,071.87/5,389.74
  6. Step 6: Final answer
    x = 3,151.93

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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.