Home / 2,858.10-4,283.10-2,111.90

Finding the Fourth Proportional to 2,858.10, 4,283.10 and 2,111.90

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Solution

The fourth proportional to 2,858.10, 4,283.10 and 2,111.90 is: 3,164.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,858.10 : 4,283.10 = 2,111.90 : x
  2. Step 2: Convert to fraction form
    2,858.10/4,283.10 = 2,111.90/x
  3. Step 3: Cross multiply
    2,858.10x = 4,283.10 × 2,111.90
  4. Step 4: Simplify right side
    2,858.10x = 9,045,457.47
  5. Step 5: Solve for x
    x = 9,045,457.47/2,858.10
  6. Step 6: Final answer
    x = 3,164.85

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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.