Home / 8,666.87-11,956.43-5,128.04

Finding the Fourth Proportional to 8,666.87, 11,956.43 and 5,128.04

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Solution

The fourth proportional to 8,666.87, 11,956.43 and 5,128.04 is: 7,074.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,666.87 : 11,956.43 = 5,128.04 : x
  2. Step 2: Convert to fraction form
    8,666.87/11,956.43 = 5,128.04/x
  3. Step 3: Cross multiply
    8,666.87x = 11,956.43 × 5,128.04
  4. Step 4: Simplify right side
    8,666.87x = 61,313,094.01
  5. Step 5: Solve for x
    x = 61,313,094.01/8,666.87
  6. Step 6: Final answer
    x = 7,074.43

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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.