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Finding the Fourth Proportional to 9,147.53, 12,623.65 and 4,955.78

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Solution

The fourth proportional to 9,147.53, 12,623.65 and 4,955.78 is: 6,839.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,147.53 : 12,623.65 = 4,955.78 : x
  2. Step 2: Convert to fraction form
    9,147.53/12,623.65 = 4,955.78/x
  3. Step 3: Cross multiply
    9,147.53x = 12,623.65 × 4,955.78
  4. Step 4: Simplify right side
    9,147.53x = 62,560,051.37
  5. Step 5: Solve for x
    x = 62,560,051.37/9,147.53
  6. Step 6: Final answer
    x = 6,839.01

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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.