Home / 8,678.25-11,981.75-5,372.01

Finding the Fourth Proportional to 8,678.25, 11,981.75 and 5,372.01

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Solution

The fourth proportional to 8,678.25, 11,981.75 and 5,372.01 is: 7,416.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,678.25 : 11,981.75 = 5,372.01 : x
  2. Step 2: Convert to fraction form
    8,678.25/11,981.75 = 5,372.01/x
  3. Step 3: Cross multiply
    8,678.25x = 11,981.75 × 5,372.01
  4. Step 4: Simplify right side
    8,678.25x = 64,366,053.96
  5. Step 5: Solve for x
    x = 64,366,053.96/8,678.25
  6. Step 6: Final answer
    x = 7,416.94

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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.