Home / 8,220.80-11,345.82-4,636.50

Finding the Fourth Proportional to 8,220.80, 11,345.82 and 4,636.50

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Solution

The fourth proportional to 8,220.80, 11,345.82 and 4,636.50 is: 6,398.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,220.80 : 11,345.82 = 4,636.50 : x
  2. Step 2: Convert to fraction form
    8,220.80/11,345.82 = 4,636.50/x
  3. Step 3: Cross multiply
    8,220.80x = 11,345.82 × 4,636.50
  4. Step 4: Simplify right side
    8,220.80x = 52,604,826.11
  5. Step 5: Solve for x
    x = 52,604,826.11/8,220.80
  6. Step 6: Final answer
    x = 6,398.99

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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.