Home / 2,808.61-3,875.99-1,629.79

Finding the Fourth Proportional to 2,808.61, 3,875.99 and 1,629.79

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Solution

The fourth proportional to 2,808.61, 3,875.99 and 1,629.79 is: 2,249.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,808.61 : 3,875.99 = 1,629.79 : x
  2. Step 2: Convert to fraction form
    2,808.61/3,875.99 = 1,629.79/x
  3. Step 3: Cross multiply
    2,808.61x = 3,875.99 × 1,629.79
  4. Step 4: Simplify right side
    2,808.61x = 6,317,031.90
  5. Step 5: Solve for x
    x = 6,317,031.90/2,808.61
  6. Step 6: Final answer
    x = 2,249.17

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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.