Home / 3,145.53-4,718.18-1,272.23

Finding the Fourth Proportional to 3,145.53, 4,718.18 and 1,272.23

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Solution

The fourth proportional to 3,145.53, 4,718.18 and 1,272.23 is: 1,908.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,145.53 : 4,718.18 = 1,272.23 : x
  2. Step 2: Convert to fraction form
    3,145.53/4,718.18 = 1,272.23/x
  3. Step 3: Cross multiply
    3,145.53x = 4,718.18 × 1,272.23
  4. Step 4: Simplify right side
    3,145.53x = 6,002,580.19
  5. Step 5: Solve for x
    x = 6,002,580.19/3,145.53
  6. Step 6: Final answer
    x = 1,908.29

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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.