Home / 5,389.66-8,084.40-2,615.86

Finding the Fourth Proportional to 5,389.66, 8,084.40 and 2,615.86

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Solution

The fourth proportional to 5,389.66, 8,084.40 and 2,615.86 is: 3,923.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,389.66 : 8,084.40 = 2,615.86 : x
  2. Step 2: Convert to fraction form
    5,389.66/8,084.40 = 2,615.86/x
  3. Step 3: Cross multiply
    5,389.66x = 8,084.40 × 2,615.86
  4. Step 4: Simplify right side
    5,389.66x = 21,147,658.58
  5. Step 5: Solve for x
    x = 21,147,658.58/5,389.66
  6. Step 6: Final answer
    x = 3,923.75

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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.