Home / 9,778.19-13,490.37-6,422.83

Finding the Fourth Proportional to 9,778.19, 13,490.37 and 6,422.83

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Solution

The fourth proportional to 9,778.19, 13,490.37 and 6,422.83 is: 8,861.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,778.19 : 13,490.37 = 6,422.83 : x
  2. Step 2: Convert to fraction form
    9,778.19/13,490.37 = 6,422.83/x
  3. Step 3: Cross multiply
    9,778.19x = 13,490.37 × 6,422.83
  4. Step 4: Simplify right side
    9,778.19x = 86,646,353.15
  5. Step 5: Solve for x
    x = 86,646,353.15/9,778.19
  6. Step 6: Final answer
    x = 8,861.19

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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.