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Finding the Fourth Proportional to 2,865.57, 3,957.18 and 1,859.01

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Solution

The fourth proportional to 2,865.57, 3,957.18 and 1,859.01 is: 2,567.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,865.57 : 3,957.18 = 1,859.01 : x
  2. Step 2: Convert to fraction form
    2,865.57/3,957.18 = 1,859.01/x
  3. Step 3: Cross multiply
    2,865.57x = 3,957.18 × 1,859.01
  4. Step 4: Simplify right side
    2,865.57x = 7,356,437.19
  5. Step 5: Solve for x
    x = 7,356,437.19/2,865.57
  6. Step 6: Final answer
    x = 2,567.18

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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.