Home / 7,681.55-11,536.92-4,780.13

Finding the Fourth Proportional to 7,681.55, 11,536.92 and 4,780.13

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Solution

The fourth proportional to 7,681.55, 11,536.92 and 4,780.13 is: 7,179.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,681.55 : 11,536.92 = 4,780.13 : x
  2. Step 2: Convert to fraction form
    7,681.55/11,536.92 = 4,780.13/x
  3. Step 3: Cross multiply
    7,681.55x = 11,536.92 × 4,780.13
  4. Step 4: Simplify right side
    7,681.55x = 55,147,919.72
  5. Step 5: Solve for x
    x = 55,147,919.72/7,681.55
  6. Step 6: Final answer
    x = 7,179.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.