Home / 8,889.48-12,268.98-5,165.64

Finding the Fourth Proportional to 8,889.48, 12,268.98 and 5,165.64

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Solution

The fourth proportional to 8,889.48, 12,268.98 and 5,165.64 is: 7,129.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,889.48 : 12,268.98 = 5,165.64 : x
  2. Step 2: Convert to fraction form
    8,889.48/12,268.98 = 5,165.64/x
  3. Step 3: Cross multiply
    8,889.48x = 12,268.98 × 5,165.64
  4. Step 4: Simplify right side
    8,889.48x = 63,377,133.85
  5. Step 5: Solve for x
    x = 63,377,133.85/8,889.48
  6. Step 6: Final answer
    x = 7,129.45

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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.