Home / 9,621.48-13,279.62-5,644.68

Finding the Fourth Proportional to 9,621.48, 13,279.62 and 5,644.68

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Solution

The fourth proportional to 9,621.48, 13,279.62 and 5,644.68 is: 7,790.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,621.48 : 13,279.62 = 5,644.68 : x
  2. Step 2: Convert to fraction form
    9,621.48/13,279.62 = 5,644.68/x
  3. Step 3: Cross multiply
    9,621.48x = 13,279.62 × 5,644.68
  4. Step 4: Simplify right side
    9,621.48x = 74,959,205.42
  5. Step 5: Solve for x
    x = 74,959,205.42/9,621.48
  6. Step 6: Final answer
    x = 7,790.82

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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.