Home / 3,145.21-4,688.89-2,997.58

Finding the Fourth Proportional to 3,145.21, 4,688.89 and 2,997.58

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Solution

The fourth proportional to 3,145.21, 4,688.89 and 2,997.58 is: 4,468.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,145.21 : 4,688.89 = 2,997.58 : x
  2. Step 2: Convert to fraction form
    3,145.21/4,688.89 = 2,997.58/x
  3. Step 3: Cross multiply
    3,145.21x = 4,688.89 × 2,997.58
  4. Step 4: Simplify right side
    3,145.21x = 14,055,322.89
  5. Step 5: Solve for x
    x = 14,055,322.89/3,145.21
  6. Step 6: Final answer
    x = 4,468.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.