Home / 8,078.18-11,145-4,719.80

Finding the Fourth Proportional to 8,078.18, 11,145 and 4,719.80

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Solution

The fourth proportional to 8,078.18, 11,145 and 4,719.80 is: 6,511.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,078.18 : 11,145 = 4,719.80 : x
  2. Step 2: Convert to fraction form
    8,078.18/11,145 = 4,719.80/x
  3. Step 3: Cross multiply
    8,078.18x = 11,145 × 4,719.80
  4. Step 4: Simplify right side
    8,078.18x = 52,602,171
  5. Step 5: Solve for x
    x = 52,602,171/8,078.18
  6. Step 6: Final answer
    x = 6,511.64

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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.