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Finding the Fourth Proportional to 9,145.78, 12,621.23 and 4,954.03

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Solution

The fourth proportional to 9,145.78, 12,621.23 and 4,954.03 is: 6,836.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,145.78 : 12,621.23 = 4,954.03 : x
  2. Step 2: Convert to fraction form
    9,145.78/12,621.23 = 4,954.03/x
  3. Step 3: Cross multiply
    9,145.78x = 12,621.23 × 4,954.03
  4. Step 4: Simplify right side
    9,145.78x = 62,525,927.29
  5. Step 5: Solve for x
    x = 62,525,927.29/9,145.78
  6. Step 6: Final answer
    x = 6,836.59

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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.