Home / 8,793.12-12,147.60-5,775.36

Finding the Fourth Proportional to 8,793.12, 12,147.60 and 5,775.36

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Solution

The fourth proportional to 8,793.12, 12,147.60 and 5,775.36 is: 7,978.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,793.12 : 12,147.60 = 5,775.36 : x
  2. Step 2: Convert to fraction form
    8,793.12/12,147.60 = 5,775.36/x
  3. Step 3: Cross multiply
    8,793.12x = 12,147.60 × 5,775.36
  4. Step 4: Simplify right side
    8,793.12x = 70,156,763.14
  5. Step 5: Solve for x
    x = 70,156,763.14/8,793.12
  6. Step 6: Final answer
    x = 7,978.60

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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.