Home / 9,886.82-13,646.85-5,697.86

Finding the Fourth Proportional to 9,886.82, 13,646.85 and 5,697.86

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Solution

The fourth proportional to 9,886.82, 13,646.85 and 5,697.86 is: 7,864.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,886.82 : 13,646.85 = 5,697.86 : x
  2. Step 2: Convert to fraction form
    9,886.82/13,646.85 = 5,697.86/x
  3. Step 3: Cross multiply
    9,886.82x = 13,646.85 × 5,697.86
  4. Step 4: Simplify right side
    9,886.82x = 77,757,840.74
  5. Step 5: Solve for x
    x = 77,757,840.74/9,886.82
  6. Step 6: Final answer
    x = 7,864.80

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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.