Home / 9,681.42-13,360.62-5,489.64

Finding the Fourth Proportional to 9,681.42, 13,360.62 and 5,489.64

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Solution

The fourth proportional to 9,681.42, 13,360.62 and 5,489.64 is: 7,575.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,681.42 : 13,360.62 = 5,489.64 : x
  2. Step 2: Convert to fraction form
    9,681.42/13,360.62 = 5,489.64/x
  3. Step 3: Cross multiply
    9,681.42x = 13,360.62 × 5,489.64
  4. Step 4: Simplify right side
    9,681.42x = 73,344,993.98
  5. Step 5: Solve for x
    x = 73,344,993.98/9,681.42
  6. Step 6: Final answer
    x = 7,575.85

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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.