Home / 2,910.87-4,363.29-2,118.33

Finding the Fourth Proportional to 2,910.87, 4,363.29 and 2,118.33

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Solution

The fourth proportional to 2,910.87, 4,363.29 and 2,118.33 is: 3,175.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,910.87 : 4,363.29 = 2,118.33 : x
  2. Step 2: Convert to fraction form
    2,910.87/4,363.29 = 2,118.33/x
  3. Step 3: Cross multiply
    2,910.87x = 4,363.29 × 2,118.33
  4. Step 4: Simplify right side
    2,910.87x = 9,242,888.11
  5. Step 5: Solve for x
    x = 9,242,888.11/2,910.87
  6. Step 6: Final answer
    x = 3,175.30

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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.