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Finding the Fourth Proportional to 2,869.58, 3,956.36 and 1,859.51

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Solution

The fourth proportional to 2,869.58, 3,956.36 and 1,859.51 is: 2,563.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,869.58 : 3,956.36 = 1,859.51 : x
  2. Step 2: Convert to fraction form
    2,869.58/3,956.36 = 1,859.51/x
  3. Step 3: Cross multiply
    2,869.58x = 3,956.36 × 1,859.51
  4. Step 4: Simplify right side
    2,869.58x = 7,356,861.90
  5. Step 5: Solve for x
    x = 7,356,861.90/2,869.58
  6. Step 6: Final answer
    x = 2,563.75

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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.