Home / 5,436.81-8,150.64-2,661.14

Finding the Fourth Proportional to 5,436.81, 8,150.64 and 2,661.14

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Solution

The fourth proportional to 5,436.81, 8,150.64 and 2,661.14 is: 3,989.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,436.81 : 8,150.64 = 2,661.14 : x
  2. Step 2: Convert to fraction form
    5,436.81/8,150.64 = 2,661.14/x
  3. Step 3: Cross multiply
    5,436.81x = 8,150.64 × 2,661.14
  4. Step 4: Simplify right side
    5,436.81x = 21,689,953.38
  5. Step 5: Solve for x
    x = 21,689,953.38/5,436.81
  6. Step 6: Final answer
    x = 3,989.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.