Home / 9,289.96-12,820.37-5,311.44

Finding the Fourth Proportional to 9,289.96, 12,820.37 and 5,311.44

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Solution

The fourth proportional to 9,289.96, 12,820.37 and 5,311.44 is: 7,329.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,289.96 : 12,820.37 = 5,311.44 : x
  2. Step 2: Convert to fraction form
    9,289.96/12,820.37 = 5,311.44/x
  3. Step 3: Cross multiply
    9,289.96x = 12,820.37 × 5,311.44
  4. Step 4: Simplify right side
    9,289.96x = 68,094,599.48
  5. Step 5: Solve for x
    x = 68,094,599.48/9,289.96
  6. Step 6: Final answer
    x = 7,329.92

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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.