Home / 8,715.58-12,021.12-5,529.88

Finding the Fourth Proportional to 8,715.58, 12,021.12 and 5,529.88

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Solution

The fourth proportional to 8,715.58, 12,021.12 and 5,529.88 is: 7,627.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,715.58 : 12,021.12 = 5,529.88 : x
  2. Step 2: Convert to fraction form
    8,715.58/12,021.12 = 5,529.88/x
  3. Step 3: Cross multiply
    8,715.58x = 12,021.12 × 5,529.88
  4. Step 4: Simplify right side
    8,715.58x = 66,475,351.07
  5. Step 5: Solve for x
    x = 66,475,351.07/8,715.58
  6. Step 6: Final answer
    x = 7,627.19

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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.