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Finding the Fourth Proportional to 9,955.08, 13,737.69 and 5,478.84

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Solution

The fourth proportional to 9,955.08, 13,737.69 and 5,478.84 is: 7,560.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,955.08 : 13,737.69 = 5,478.84 : x
  2. Step 2: Convert to fraction form
    9,955.08/13,737.69 = 5,478.84/x
  3. Step 3: Cross multiply
    9,955.08x = 13,737.69 × 5,478.84
  4. Step 4: Simplify right side
    9,955.08x = 75,266,605.48
  5. Step 5: Solve for x
    x = 75,266,605.48/9,955.08
  6. Step 6: Final answer
    x = 7,560.62

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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.