Home / 8,686.89-11,983.91-5,147.37

Finding the Fourth Proportional to 8,686.89, 11,983.91 and 5,147.37

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Solution

The fourth proportional to 8,686.89, 11,983.91 and 5,147.37 is: 7,101.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,686.89 : 11,983.91 = 5,147.37 : x
  2. Step 2: Convert to fraction form
    8,686.89/11,983.91 = 5,147.37/x
  3. Step 3: Cross multiply
    8,686.89x = 11,983.91 × 5,147.37
  4. Step 4: Simplify right side
    8,686.89x = 61,685,593.08
  5. Step 5: Solve for x
    x = 61,685,593.08/8,686.89
  6. Step 6: Final answer
    x = 7,101.00

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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.