Home / 2,992.08-4,124.80-2,105.20

Finding the Fourth Proportional to 2,992.08, 4,124.80 and 2,105.20

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Solution

The fourth proportional to 2,992.08, 4,124.80 and 2,105.20 is: 2,902.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,992.08 : 4,124.80 = 2,105.20 : x
  2. Step 2: Convert to fraction form
    2,992.08/4,124.80 = 2,105.20/x
  3. Step 3: Cross multiply
    2,992.08x = 4,124.80 × 2,105.20
  4. Step 4: Simplify right side
    2,992.08x = 8,683,528.96
  5. Step 5: Solve for x
    x = 8,683,528.96/2,992.08
  6. Step 6: Final answer
    x = 2,902.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.