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Finding the Fourth Proportional to 5,358.97, 8,038.83 and 1,660.72

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Solution

The fourth proportional to 5,358.97, 8,038.83 and 1,660.72 is: 2,491.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,358.97 : 8,038.83 = 1,660.72 : x
  2. Step 2: Convert to fraction form
    5,358.97/8,038.83 = 1,660.72/x
  3. Step 3: Cross multiply
    5,358.97x = 8,038.83 × 1,660.72
  4. Step 4: Simplify right side
    5,358.97x = 13,350,245.76
  5. Step 5: Solve for x
    x = 13,350,245.76/5,358.97
  6. Step 6: Final answer
    x = 2,491.20

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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.