Home / 5,165.94-7,129.10-2,808.23

Finding the Fourth Proportional to 5,165.94, 7,129.10 and 2,808.23

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Solution

The fourth proportional to 5,165.94, 7,129.10 and 2,808.23 is: 3,875.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,165.94 : 7,129.10 = 2,808.23 : x
  2. Step 2: Convert to fraction form
    5,165.94/7,129.10 = 2,808.23/x
  3. Step 3: Cross multiply
    5,165.94x = 7,129.10 × 2,808.23
  4. Step 4: Simplify right side
    5,165.94x = 20,020,152.49
  5. Step 5: Solve for x
    x = 20,020,152.49/5,165.94
  6. Step 6: Final answer
    x = 3,875.41

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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.