Home / 8,712.39-13,056.78-5,590.80

Finding the Fourth Proportional to 8,712.39, 13,056.78 and 5,590.80

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Solution

The fourth proportional to 8,712.39, 13,056.78 and 5,590.80 is: 8,378.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,712.39 : 13,056.78 = 5,590.80 : x
  2. Step 2: Convert to fraction form
    8,712.39/13,056.78 = 5,590.80/x
  3. Step 3: Cross multiply
    8,712.39x = 13,056.78 × 5,590.80
  4. Step 4: Simplify right side
    8,712.39x = 72,997,845.62
  5. Step 5: Solve for x
    x = 72,997,845.62/8,712.39
  6. Step 6: Final answer
    x = 8,378.62

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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.