Home / 2,858.29-3,945.11-2,385.65

Finding the Fourth Proportional to 2,858.29, 3,945.11 and 2,385.65

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Solution

The fourth proportional to 2,858.29, 3,945.11 and 2,385.65 is: 3,292.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,858.29 : 3,945.11 = 2,385.65 : x
  2. Step 2: Convert to fraction form
    2,858.29/3,945.11 = 2,385.65/x
  3. Step 3: Cross multiply
    2,858.29x = 3,945.11 × 2,385.65
  4. Step 4: Simplify right side
    2,858.29x = 9,411,649.61
  5. Step 5: Solve for x
    x = 9,411,649.61/2,858.29
  6. Step 6: Final answer
    x = 3,292.76

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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.