Home / 5,166.52-7,129.81-2,808.66

Finding the Fourth Proportional to 5,166.52, 7,129.81 and 2,808.66

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Solution

The fourth proportional to 5,166.52, 7,129.81 and 2,808.66 is: 3,875.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,166.52 : 7,129.81 = 2,808.66 : x
  2. Step 2: Convert to fraction form
    5,166.52/7,129.81 = 2,808.66/x
  3. Step 3: Cross multiply
    5,166.52x = 7,129.81 × 2,808.66
  4. Step 4: Simplify right side
    5,166.52x = 20,025,176.51
  5. Step 5: Solve for x
    x = 20,025,176.51/5,166.52
  6. Step 6: Final answer
    x = 3,875.95

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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.