Home / 5,166.08-7,129.12-2,808.16

Finding the Fourth Proportional to 5,166.08, 7,129.12 and 2,808.16

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Solution

The fourth proportional to 5,166.08, 7,129.12 and 2,808.16 is: 3,875.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,166.08 : 7,129.12 = 2,808.16 : x
  2. Step 2: Convert to fraction form
    5,166.08/7,129.12 = 2,808.16/x
  3. Step 3: Cross multiply
    5,166.08x = 7,129.12 × 2,808.16
  4. Step 4: Simplify right side
    5,166.08x = 20,019,709.62
  5. Step 5: Solve for x
    x = 20,019,709.62/5,166.08
  6. Step 6: Final answer
    x = 3,875.22

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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.