Home / 8,786.40-13,165.20-7,317.60

Finding the Fourth Proportional to 8,786.40, 13,165.20 and 7,317.60

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Solution

The fourth proportional to 8,786.40, 13,165.20 and 7,317.60 is: 10,964.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,786.40 : 13,165.20 = 7,317.60 : x
  2. Step 2: Convert to fraction form
    8,786.40/13,165.20 = 7,317.60/x
  3. Step 3: Cross multiply
    8,786.40x = 13,165.20 × 7,317.60
  4. Step 4: Simplify right side
    8,786.40x = 96,337,667.52
  5. Step 5: Solve for x
    x = 96,337,667.52/8,786.40
  6. Step 6: Final answer
    x = 10,964.41

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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.