Home / 9,985.16-13,780.26-5,736.92

Finding the Fourth Proportional to 9,985.16, 13,780.26 and 5,736.92

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Solution

The fourth proportional to 9,985.16, 13,780.26 and 5,736.92 is: 7,917.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,985.16 : 13,780.26 = 5,736.92 : x
  2. Step 2: Convert to fraction form
    9,985.16/13,780.26 = 5,736.92/x
  3. Step 3: Cross multiply
    9,985.16x = 13,780.26 × 5,736.92
  4. Step 4: Simplify right side
    9,985.16x = 79,056,249.20
  5. Step 5: Solve for x
    x = 79,056,249.20/9,985.16
  6. Step 6: Final answer
    x = 7,917.37

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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.