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Finding the Fourth Proportional to 9,015.70, 13,521.15 and 2,775.70

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Solution

The fourth proportional to 9,015.70, 13,521.15 and 2,775.70 is: 4,162.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,015.70 : 13,521.15 = 2,775.70 : x
  2. Step 2: Convert to fraction form
    9,015.70/13,521.15 = 2,775.70/x
  3. Step 3: Cross multiply
    9,015.70x = 13,521.15 × 2,775.70
  4. Step 4: Simplify right side
    9,015.70x = 37,530,656.06
  5. Step 5: Solve for x
    x = 37,530,656.06/9,015.70
  6. Step 6: Final answer
    x = 4,162.81

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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.