Home / 8,670.17-11,970.70-5,691.07

Finding the Fourth Proportional to 8,670.17, 11,970.70 and 5,691.07

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Solution

The fourth proportional to 8,670.17, 11,970.70 and 5,691.07 is: 7,857.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,670.17 : 11,970.70 = 5,691.07 : x
  2. Step 2: Convert to fraction form
    8,670.17/11,970.70 = 5,691.07/x
  3. Step 3: Cross multiply
    8,670.17x = 11,970.70 × 5,691.07
  4. Step 4: Simplify right side
    8,670.17x = 68,126,091.65
  5. Step 5: Solve for x
    x = 68,126,091.65/8,670.17
  6. Step 6: Final answer
    x = 7,857.53

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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.