Home / 8,114.93-11,200.35-5,128.86

Finding the Fourth Proportional to 8,114.93, 11,200.35 and 5,128.86

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Solution

The fourth proportional to 8,114.93, 11,200.35 and 5,128.86 is: 7,078.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,114.93 : 11,200.35 = 5,128.86 : x
  2. Step 2: Convert to fraction form
    8,114.93/11,200.35 = 5,128.86/x
  3. Step 3: Cross multiply
    8,114.93x = 11,200.35 × 5,128.86
  4. Step 4: Simplify right side
    8,114.93x = 57,445,027.10
  5. Step 5: Solve for x
    x = 57,445,027.10/8,114.93
  6. Step 6: Final answer
    x = 7,078.93

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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.