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Finding the Fourth Proportional to 3,145.93, 4,718.28 and 2,989.83

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Solution

The fourth proportional to 3,145.93, 4,718.28 and 2,989.83 is: 4,484.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,145.93 : 4,718.28 = 2,989.83 : x
  2. Step 2: Convert to fraction form
    3,145.93/4,718.28 = 2,989.83/x
  3. Step 3: Cross multiply
    3,145.93x = 4,718.28 × 2,989.83
  4. Step 4: Simplify right side
    3,145.93x = 14,106,855.09
  5. Step 5: Solve for x
    x = 14,106,855.09/3,145.93
  6. Step 6: Final answer
    x = 4,484.16

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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.