Home / 9,985.06-13,785.96-6,213.70

Finding the Fourth Proportional to 9,985.06, 13,785.96 and 6,213.70

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Solution

The fourth proportional to 9,985.06, 13,785.96 and 6,213.70 is: 8,579.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,985.06 : 13,785.96 = 6,213.70 : x
  2. Step 2: Convert to fraction form
    9,985.06/13,785.96 = 6,213.70/x
  3. Step 3: Cross multiply
    9,985.06x = 13,785.96 × 6,213.70
  4. Step 4: Simplify right side
    9,985.06x = 85,661,819.65
  5. Step 5: Solve for x
    x = 85,661,819.65/9,985.06
  6. Step 6: Final answer
    x = 8,579.00

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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.