Home / 5,795.20-8,650.40-4,978.72

Finding the Fourth Proportional to 5,795.20, 8,650.40 and 4,978.72

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Solution

The fourth proportional to 5,795.20, 8,650.40 and 4,978.72 is: 7,431.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,795.20 : 8,650.40 = 4,978.72 : x
  2. Step 2: Convert to fraction form
    5,795.20/8,650.40 = 4,978.72/x
  3. Step 3: Cross multiply
    5,795.20x = 8,650.40 × 4,978.72
  4. Step 4: Simplify right side
    5,795.20x = 43,067,919.49
  5. Step 5: Solve for x
    x = 43,067,919.49/5,795.20
  6. Step 6: Final answer
    x = 7,431.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.