Home / 3,145.18-4,718.01-836.38

Finding the Fourth Proportional to 3,145.18, 4,718.01 and 836.38

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Solution

The fourth proportional to 3,145.18, 4,718.01 and 836.38 is: 1,254.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,145.18 : 4,718.01 = 836.38 : x
  2. Step 2: Convert to fraction form
    3,145.18/4,718.01 = 836.38/x
  3. Step 3: Cross multiply
    3,145.18x = 4,718.01 × 836.38
  4. Step 4: Simplify right side
    3,145.18x = 3,946,049.20
  5. Step 5: Solve for x
    x = 3,946,049.20/3,145.18
  6. Step 6: Final answer
    x = 1,254.63

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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.