Home / 8,439.40-11,651.26-7,505.14

Finding the Fourth Proportional to 8,439.40, 11,651.26 and 7,505.14

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Solution

The fourth proportional to 8,439.40, 11,651.26 and 7,505.14 is: 10,361.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,439.40 : 11,651.26 = 7,505.14 : x
  2. Step 2: Convert to fraction form
    8,439.40/11,651.26 = 7,505.14/x
  3. Step 3: Cross multiply
    8,439.40x = 11,651.26 × 7,505.14
  4. Step 4: Simplify right side
    8,439.40x = 87,444,337.48
  5. Step 5: Solve for x
    x = 87,444,337.48/8,439.40
  6. Step 6: Final answer
    x = 10,361.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.