Home / 8,772.87-12,103.11-5,585.34

Finding the Fourth Proportional to 8,772.87, 12,103.11 and 5,585.34

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Solution

The fourth proportional to 8,772.87, 12,103.11 and 5,585.34 is: 7,705.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,772.87 : 12,103.11 = 5,585.34 : x
  2. Step 2: Convert to fraction form
    8,772.87/12,103.11 = 5,585.34/x
  3. Step 3: Cross multiply
    8,772.87x = 12,103.11 × 5,585.34
  4. Step 4: Simplify right side
    8,772.87x = 67,599,984.41
  5. Step 5: Solve for x
    x = 67,599,984.41/8,772.87
  6. Step 6: Final answer
    x = 7,705.57

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Half scale
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Double scale
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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.