Home / 5,166.18-7,129.26-2,808.36

Finding the Fourth Proportional to 5,166.18, 7,129.26 and 2,808.36

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Solution

The fourth proportional to 5,166.18, 7,129.26 and 2,808.36 is: 3,875.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,166.18 : 7,129.26 = 2,808.36 : x
  2. Step 2: Convert to fraction form
    5,166.18/7,129.26 = 2,808.36/x
  3. Step 3: Cross multiply
    5,166.18x = 7,129.26 × 2,808.36
  4. Step 4: Simplify right side
    5,166.18x = 20,021,528.61
  5. Step 5: Solve for x
    x = 20,021,528.61/5,166.18
  6. Step 6: Final answer
    x = 3,875.50

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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.