Home / 5,661.28-8,490.64-2,150.56

Finding the Fourth Proportional to 5,661.28, 8,490.64 and 2,150.56

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Solution

The fourth proportional to 5,661.28, 8,490.64 and 2,150.56 is: 3,225.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,661.28 : 8,490.64 = 2,150.56 : x
  2. Step 2: Convert to fraction form
    5,661.28/8,490.64 = 2,150.56/x
  3. Step 3: Cross multiply
    5,661.28x = 8,490.64 × 2,150.56
  4. Step 4: Simplify right side
    5,661.28x = 18,259,630.76
  5. Step 5: Solve for x
    x = 18,259,630.76/5,661.28
  6. Step 6: Final answer
    x = 3,225.35

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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.