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Finding the Fourth Proportional to 2,615.81, 3,609.87 and 1,436.87

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Solution

The fourth proportional to 2,615.81, 3,609.87 and 1,436.87 is: 1,982.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,615.81 : 3,609.87 = 1,436.87 : x
  2. Step 2: Convert to fraction form
    2,615.81/3,609.87 = 1,436.87/x
  3. Step 3: Cross multiply
    2,615.81x = 3,609.87 × 1,436.87
  4. Step 4: Simplify right side
    2,615.81x = 5,186,897.24
  5. Step 5: Solve for x
    x = 5,186,897.24/2,615.81
  6. Step 6: Final answer
    x = 1,982.91

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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.