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Finding the Fourth Proportional to 6,666.25, 9,980.88 and 4,328.95

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Solution

The fourth proportional to 6,666.25, 9,980.88 and 4,328.95 is: 6,481.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,666.25 : 9,980.88 = 4,328.95 : x
  2. Step 2: Convert to fraction form
    6,666.25/9,980.88 = 4,328.95/x
  3. Step 3: Cross multiply
    6,666.25x = 9,980.88 × 4,328.95
  4. Step 4: Simplify right side
    6,666.25x = 43,206,730.48
  5. Step 5: Solve for x
    x = 43,206,730.48/6,666.25
  6. Step 6: Final answer
    x = 6,481.41

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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.