Home / 8,813.20-13,217.28-6,340.72

Finding the Fourth Proportional to 8,813.20, 13,217.28 and 6,340.72

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Solution

The fourth proportional to 8,813.20, 13,217.28 and 6,340.72 is: 9,509.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,813.20 : 13,217.28 = 6,340.72 : x
  2. Step 2: Convert to fraction form
    8,813.20/13,217.28 = 6,340.72/x
  3. Step 3: Cross multiply
    8,813.20x = 13,217.28 × 6,340.72
  4. Step 4: Simplify right side
    8,813.20x = 83,807,071.64
  5. Step 5: Solve for x
    x = 83,807,071.64/8,813.20
  6. Step 6: Final answer
    x = 9,509.27

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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.