Home / 8,289.60-12,434.88-3,672.64

Finding the Fourth Proportional to 8,289.60, 12,434.88 and 3,672.64

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Solution

The fourth proportional to 8,289.60, 12,434.88 and 3,672.64 is: 5,509.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,289.60 : 12,434.88 = 3,672.64 : x
  2. Step 2: Convert to fraction form
    8,289.60/12,434.88 = 3,672.64/x
  3. Step 3: Cross multiply
    8,289.60x = 12,434.88 × 3,672.64
  4. Step 4: Simplify right side
    8,289.60x = 45,668,837.68
  5. Step 5: Solve for x
    x = 45,668,837.68/8,289.60
  6. Step 6: Final answer
    x = 5,509.17

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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.