Home / 9,177.12-12,664.32-4,985.28

Finding the Fourth Proportional to 9,177.12, 12,664.32 and 4,985.28

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Solution

The fourth proportional to 9,177.12, 12,664.32 and 4,985.28 is: 6,879.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,177.12 : 12,664.32 = 4,985.28 : x
  2. Step 2: Convert to fraction form
    9,177.12/12,664.32 = 4,985.28/x
  3. Step 3: Cross multiply
    9,177.12x = 12,664.32 × 4,985.28
  4. Step 4: Simplify right side
    9,177.12x = 63,135,181.21
  5. Step 5: Solve for x
    x = 63,135,181.21/9,177.12
  6. Step 6: Final answer
    x = 6,879.63

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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.