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Finding the Fourth Proportional to 6,660.64, 9,990.91 and 1,730.26

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Solution

The fourth proportional to 6,660.64, 9,990.91 and 1,730.26 is: 2,595.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,660.64 : 9,990.91 = 1,730.26 : x
  2. Step 2: Convert to fraction form
    6,660.64/9,990.91 = 1,730.26/x
  3. Step 3: Cross multiply
    6,660.64x = 9,990.91 × 1,730.26
  4. Step 4: Simplify right side
    6,660.64x = 17,286,871.94
  5. Step 5: Solve for x
    x = 17,286,871.94/6,660.64
  6. Step 6: Final answer
    x = 2,595.38

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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.