Home / 8,478.36-12,717.45-4,992.62

Finding the Fourth Proportional to 8,478.36, 12,717.45 and 4,992.62

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Solution

The fourth proportional to 8,478.36, 12,717.45 and 4,992.62 is: 7,488.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,478.36 : 12,717.45 = 4,992.62 : x
  2. Step 2: Convert to fraction form
    8,478.36/12,717.45 = 4,992.62/x
  3. Step 3: Cross multiply
    8,478.36x = 12,717.45 × 4,992.62
  4. Step 4: Simplify right side
    8,478.36x = 63,493,331.63
  5. Step 5: Solve for x
    x = 63,493,331.63/8,478.36
  6. Step 6: Final answer
    x = 7,488.87

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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.