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Finding the Fourth Proportional to 3,145.62, 4,718.99 and 1,295.72

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Solution

The fourth proportional to 3,145.62, 4,718.99 and 1,295.72 is: 1,943.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,145.62 : 4,718.99 = 1,295.72 : x
  2. Step 2: Convert to fraction form
    3,145.62/4,718.99 = 1,295.72/x
  3. Step 3: Cross multiply
    3,145.62x = 4,718.99 × 1,295.72
  4. Step 4: Simplify right side
    3,145.62x = 6,114,489.72
  5. Step 5: Solve for x
    x = 6,114,489.72/3,145.62
  6. Step 6: Final answer
    x = 1,943.81

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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.