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Finding the Fourth Proportional to 8,980, 12,392.48 and 5,254.08

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Solution

The fourth proportional to 8,980, 12,392.48 and 5,254.08 is: 7,250.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,980 : 12,392.48 = 5,254.08 : x
  2. Step 2: Convert to fraction form
    8,980/12,392.48 = 5,254.08/x
  3. Step 3: Cross multiply
    8,980x = 12,392.48 × 5,254.08
  4. Step 4: Simplify right side
    8,980x = 65,111,081.32
  5. Step 5: Solve for x
    x = 65,111,081.32/8,980
  6. Step 6: Final answer
    x = 7,250.68

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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.