Home / 3,431.08-5,142.10-1,871.76

Finding the Fourth Proportional to 3,431.08, 5,142.10 and 1,871.76

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Solution

The fourth proportional to 3,431.08, 5,142.10 and 1,871.76 is: 2,805.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,431.08 : 5,142.10 = 1,871.76 : x
  2. Step 2: Convert to fraction form
    3,431.08/5,142.10 = 1,871.76/x
  3. Step 3: Cross multiply
    3,431.08x = 5,142.10 × 1,871.76
  4. Step 4: Simplify right side
    3,431.08x = 9,624,777.10
  5. Step 5: Solve for x
    x = 9,624,777.10/3,431.08
  6. Step 6: Final answer
    x = 2,805.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.