Home / 8,561.40-11,820.60-5,376.12

Finding the Fourth Proportional to 8,561.40, 11,820.60 and 5,376.12

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Solution

The fourth proportional to 8,561.40, 11,820.60 and 5,376.12 is: 7,422.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,561.40 : 11,820.60 = 5,376.12 : x
  2. Step 2: Convert to fraction form
    8,561.40/11,820.60 = 5,376.12/x
  3. Step 3: Cross multiply
    8,561.40x = 11,820.60 × 5,376.12
  4. Step 4: Simplify right side
    8,561.40x = 63,548,964.07
  5. Step 5: Solve for x
    x = 63,548,964.07/8,561.40
  6. Step 6: Final answer
    x = 7,422.73

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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.