Home / 5,166.46-7,129.70-2,808.58

Finding the Fourth Proportional to 5,166.46, 7,129.70 and 2,808.58

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Solution

The fourth proportional to 5,166.46, 7,129.70 and 2,808.58 is: 3,875.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,166.46 : 7,129.70 = 2,808.58 : x
  2. Step 2: Convert to fraction form
    5,166.46/7,129.70 = 2,808.58/x
  3. Step 3: Cross multiply
    5,166.46x = 7,129.70 × 2,808.58
  4. Step 4: Simplify right side
    5,166.46x = 20,024,332.83
  5. Step 5: Solve for x
    x = 20,024,332.83/5,166.46
  6. Step 6: Final answer
    x = 3,875.83

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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.