Home / 2,989.72-4,477.62-2,885.90

Finding the Fourth Proportional to 2,989.72, 4,477.62 and 2,885.90

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Solution

The fourth proportional to 2,989.72, 4,477.62 and 2,885.90 is: 4,322.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,989.72 : 4,477.62 = 2,885.90 : x
  2. Step 2: Convert to fraction form
    2,989.72/4,477.62 = 2,885.90/x
  3. Step 3: Cross multiply
    2,989.72x = 4,477.62 × 2,885.90
  4. Step 4: Simplify right side
    2,989.72x = 12,921,963.56
  5. Step 5: Solve for x
    x = 12,921,963.56/2,989.72
  6. Step 6: Final answer
    x = 4,322.13

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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.