Home / 2,801.10-3,866.08-2,136.76

Finding the Fourth Proportional to 2,801.10, 3,866.08 and 2,136.76

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Solution

The fourth proportional to 2,801.10, 3,866.08 and 2,136.76 is: 2,949.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,801.10 : 3,866.08 = 2,136.76 : x
  2. Step 2: Convert to fraction form
    2,801.10/3,866.08 = 2,136.76/x
  3. Step 3: Cross multiply
    2,801.10x = 3,866.08 × 2,136.76
  4. Step 4: Simplify right side
    2,801.10x = 8,260,885.10
  5. Step 5: Solve for x
    x = 8,260,885.10/2,801.10
  6. Step 6: Final answer
    x = 2,949.16

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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.