Home / 2,988.27-4,122.83-1,808.91

Finding the Fourth Proportional to 2,988.27, 4,122.83 and 1,808.91

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Solution

The fourth proportional to 2,988.27, 4,122.83 and 1,808.91 is: 2,495.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,988.27 : 4,122.83 = 1,808.91 : x
  2. Step 2: Convert to fraction form
    2,988.27/4,122.83 = 1,808.91/x
  3. Step 3: Cross multiply
    2,988.27x = 4,122.83 × 1,808.91
  4. Step 4: Simplify right side
    2,988.27x = 7,457,832.94
  5. Step 5: Solve for x
    x = 7,457,832.94/2,988.27
  6. Step 6: Final answer
    x = 2,495.70

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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.