Home / 8,972.60-13,442.70-7,935.80

Finding the Fourth Proportional to 8,972.60, 13,442.70 and 7,935.80

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Solution

The fourth proportional to 8,972.60, 13,442.70 and 7,935.80 is: 11,889.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,972.60 : 13,442.70 = 7,935.80 : x
  2. Step 2: Convert to fraction form
    8,972.60/13,442.70 = 7,935.80/x
  3. Step 3: Cross multiply
    8,972.60x = 13,442.70 × 7,935.80
  4. Step 4: Simplify right side
    8,972.60x = 106,678,578.66
  5. Step 5: Solve for x
    x = 106,678,578.66/8,972.60
  6. Step 6: Final answer
    x = 11,889.37

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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.