Home / 9,876.24-13,629.12-5,684.64

Finding the Fourth Proportional to 9,876.24, 13,629.12 and 5,684.64

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Solution

The fourth proportional to 9,876.24, 13,629.12 and 5,684.64 is: 7,844.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,876.24 : 13,629.12 = 5,684.64 : x
  2. Step 2: Convert to fraction form
    9,876.24/13,629.12 = 5,684.64/x
  3. Step 3: Cross multiply
    9,876.24x = 13,629.12 × 5,684.64
  4. Step 4: Simplify right side
    9,876.24x = 77,476,640.72
  5. Step 5: Solve for x
    x = 77,476,640.72/9,876.24
  6. Step 6: Final answer
    x = 7,844.75

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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.