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Finding the Fourth Proportional to 7,660.13, 11,490.19 and 2,113.52

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Solution

The fourth proportional to 7,660.13, 11,490.19 and 2,113.52 is: 3,170.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,660.13 : 11,490.19 = 2,113.52 : x
  2. Step 2: Convert to fraction form
    7,660.13/11,490.19 = 2,113.52/x
  3. Step 3: Cross multiply
    7,660.13x = 11,490.19 × 2,113.52
  4. Step 4: Simplify right side
    7,660.13x = 24,284,683.63
  5. Step 5: Solve for x
    x = 24,284,683.63/7,660.13
  6. Step 6: Final answer
    x = 3,170.27

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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.