Home / 2,805.99-3,872.45-1,860.15

Finding the Fourth Proportional to 2,805.99, 3,872.45 and 1,860.15

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Solution

The fourth proportional to 2,805.99, 3,872.45 and 1,860.15 is: 2,567.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,805.99 : 3,872.45 = 1,860.15 : x
  2. Step 2: Convert to fraction form
    2,805.99/3,872.45 = 1,860.15/x
  3. Step 3: Cross multiply
    2,805.99x = 3,872.45 × 1,860.15
  4. Step 4: Simplify right side
    2,805.99x = 7,203,337.87
  5. Step 5: Solve for x
    x = 7,203,337.87/2,805.99
  6. Step 6: Final answer
    x = 2,567.13

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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.