Home / 8,943.36-12,339.84-5,216.64

Finding the Fourth Proportional to 8,943.36, 12,339.84 and 5,216.64

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Solution

The fourth proportional to 8,943.36, 12,339.84 and 5,216.64 is: 7,197.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,943.36 : 12,339.84 = 5,216.64 : x
  2. Step 2: Convert to fraction form
    8,943.36/12,339.84 = 5,216.64/x
  3. Step 3: Cross multiply
    8,943.36x = 12,339.84 × 5,216.64
  4. Step 4: Simplify right side
    8,943.36x = 64,372,502.94
  5. Step 5: Solve for x
    x = 64,372,502.94/8,943.36
  6. Step 6: Final answer
    x = 7,197.80

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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.