Home / 5,205.81-7,179.15-4,147.10

Finding the Fourth Proportional to 5,205.81, 7,179.15 and 4,147.10

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Solution

The fourth proportional to 5,205.81, 7,179.15 and 4,147.10 is: 5,719.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,205.81 : 7,179.15 = 4,147.10 : x
  2. Step 2: Convert to fraction form
    5,205.81/7,179.15 = 4,147.10/x
  3. Step 3: Cross multiply
    5,205.81x = 7,179.15 × 4,147.10
  4. Step 4: Simplify right side
    5,205.81x = 29,772,596.33
  5. Step 5: Solve for x
    x = 29,772,596.33/5,205.81
  6. Step 6: Final answer
    x = 5,719.11

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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.