Home / 8,078.40-11,147.64-4,542.16

Finding the Fourth Proportional to 8,078.40, 11,147.64 and 4,542.16

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Solution

The fourth proportional to 8,078.40, 11,147.64 and 4,542.16 is: 6,267.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,078.40 : 11,147.64 = 4,542.16 : x
  2. Step 2: Convert to fraction form
    8,078.40/11,147.64 = 4,542.16/x
  3. Step 3: Cross multiply
    8,078.40x = 11,147.64 × 4,542.16
  4. Step 4: Simplify right side
    8,078.40x = 50,634,364.50
  5. Step 5: Solve for x
    x = 50,634,364.50/8,078.40
  6. Step 6: Final answer
    x = 6,267.87

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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.