Home / 5,827.86-8,739.90-2,128.14

Finding the Fourth Proportional to 5,827.86, 8,739.90 and 2,128.14

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Solution

The fourth proportional to 5,827.86, 8,739.90 and 2,128.14 is: 3,191.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,827.86 : 8,739.90 = 2,128.14 : x
  2. Step 2: Convert to fraction form
    5,827.86/8,739.90 = 2,128.14/x
  3. Step 3: Cross multiply
    5,827.86x = 8,739.90 × 2,128.14
  4. Step 4: Simplify right side
    5,827.86x = 18,599,730.79
  5. Step 5: Solve for x
    x = 18,599,730.79/5,827.86
  6. Step 6: Final answer
    x = 3,191.52

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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.