Home / 6,287.38-8,683.88-4,187.86

Finding the Fourth Proportional to 6,287.38, 8,683.88 and 4,187.86

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Solution

The fourth proportional to 6,287.38, 8,683.88 and 4,187.86 is: 5,784.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,287.38 : 8,683.88 = 4,187.86 : x
  2. Step 2: Convert to fraction form
    6,287.38/8,683.88 = 4,187.86/x
  3. Step 3: Cross multiply
    6,287.38x = 8,683.88 × 4,187.86
  4. Step 4: Simplify right side
    6,287.38x = 36,366,873.70
  5. Step 5: Solve for x
    x = 36,366,873.70/6,287.38
  6. Step 6: Final answer
    x = 5,784.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.