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Finding the Fourth Proportional to 8,980.23, 12,388.43 and 6,977.08

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Solution

The fourth proportional to 8,980.23, 12,388.43 and 6,977.08 is: 9,625.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,980.23 : 12,388.43 = 6,977.08 : x
  2. Step 2: Convert to fraction form
    8,980.23/12,388.43 = 6,977.08/x
  3. Step 3: Cross multiply
    8,980.23x = 12,388.43 × 6,977.08
  4. Step 4: Simplify right side
    8,980.23x = 86,435,001.33
  5. Step 5: Solve for x
    x = 86,435,001.33/8,980.23
  6. Step 6: Final answer
    x = 9,625.03

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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.