Home / 9,178.15-12,658.80-6,189.25

Finding the Fourth Proportional to 9,178.15, 12,658.80 and 6,189.25

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Solution

The fourth proportional to 9,178.15, 12,658.80 and 6,189.25 is: 8,536.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,178.15 : 12,658.80 = 6,189.25 : x
  2. Step 2: Convert to fraction form
    9,178.15/12,658.80 = 6,189.25/x
  3. Step 3: Cross multiply
    9,178.15x = 12,658.80 × 6,189.25
  4. Step 4: Simplify right side
    9,178.15x = 78,348,477.90
  5. Step 5: Solve for x
    x = 78,348,477.90/9,178.15
  6. Step 6: Final answer
    x = 8,536.41

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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.