Home / 5,216.20-7,197.60-2,977.72

Finding the Fourth Proportional to 5,216.20, 7,197.60 and 2,977.72

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Solution

The fourth proportional to 5,216.20, 7,197.60 and 2,977.72 is: 4,108.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,216.20 : 7,197.60 = 2,977.72 : x
  2. Step 2: Convert to fraction form
    5,216.20/7,197.60 = 2,977.72/x
  3. Step 3: Cross multiply
    5,216.20x = 7,197.60 × 2,977.72
  4. Step 4: Simplify right side
    5,216.20x = 21,432,437.47
  5. Step 5: Solve for x
    x = 21,432,437.47/5,216.20
  6. Step 6: Final answer
    x = 4,108.82

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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.