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Finding the Fourth Proportional to 2,807.19, 3,869.82 and 1,965.24

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Solution

The fourth proportional to 2,807.19, 3,869.82 and 1,965.24 is: 2,709.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,807.19 : 3,869.82 = 1,965.24 : x
  2. Step 2: Convert to fraction form
    2,807.19/3,869.82 = 1,965.24/x
  3. Step 3: Cross multiply
    2,807.19x = 3,869.82 × 1,965.24
  4. Step 4: Simplify right side
    2,807.19x = 7,605,125.06
  5. Step 5: Solve for x
    x = 7,605,125.06/2,807.19
  6. Step 6: Final answer
    x = 2,709.16

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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.