Home / 2,807.73-3,871.45-1,798.11

Finding the Fourth Proportional to 2,807.73, 3,871.45 and 1,798.11

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Solution

The fourth proportional to 2,807.73, 3,871.45 and 1,798.11 is: 2,479.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,807.73 : 3,871.45 = 1,798.11 : x
  2. Step 2: Convert to fraction form
    2,807.73/3,871.45 = 1,798.11/x
  3. Step 3: Cross multiply
    2,807.73x = 3,871.45 × 1,798.11
  4. Step 4: Simplify right side
    2,807.73x = 6,961,292.96
  5. Step 5: Solve for x
    x = 6,961,292.96/2,807.73
  6. Step 6: Final answer
    x = 2,479.33

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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.