Home / 8,972.37-12,355.74-6,979.57

Finding the Fourth Proportional to 8,972.37, 12,355.74 and 6,979.57

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Solution

The fourth proportional to 8,972.37, 12,355.74 and 6,979.57 is: 9,611.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,972.37 : 12,355.74 = 6,979.57 : x
  2. Step 2: Convert to fraction form
    8,972.37/12,355.74 = 6,979.57/x
  3. Step 3: Cross multiply
    8,972.37x = 12,355.74 × 6,979.57
  4. Step 4: Simplify right side
    8,972.37x = 86,237,721.34
  5. Step 5: Solve for x
    x = 86,237,721.34/8,972.37
  6. Step 6: Final answer
    x = 9,611.48

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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.