Home / 9,135.60-13,679.10-5,830.80

Finding the Fourth Proportional to 9,135.60, 13,679.10 and 5,830.80

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Solution

The fourth proportional to 9,135.60, 13,679.10 and 5,830.80 is: 8,730.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,135.60 : 13,679.10 = 5,830.80 : x
  2. Step 2: Convert to fraction form
    9,135.60/13,679.10 = 5,830.80/x
  3. Step 3: Cross multiply
    9,135.60x = 13,679.10 × 5,830.80
  4. Step 4: Simplify right side
    9,135.60x = 79,760,096.28
  5. Step 5: Solve for x
    x = 79,760,096.28/9,135.60
  6. Step 6: Final answer
    x = 8,730.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.