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Finding the Fourth Proportional to 9,891.13, 14,842.53 and 3,655.56

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Solution

The fourth proportional to 9,891.13, 14,842.53 and 3,655.56 is: 5,485.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,891.13 : 14,842.53 = 3,655.56 : x
  2. Step 2: Convert to fraction form
    9,891.13/14,842.53 = 3,655.56/x
  3. Step 3: Cross multiply
    9,891.13x = 14,842.53 × 3,655.56
  4. Step 4: Simplify right side
    9,891.13x = 54,257,758.97
  5. Step 5: Solve for x
    x = 54,257,758.97/9,891.13
  6. Step 6: Final answer
    x = 5,485.50

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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.