Home / 5,215.37-7,197.90-2,976.74

Finding the Fourth Proportional to 5,215.37, 7,197.90 and 2,976.74

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Solution

The fourth proportional to 5,215.37, 7,197.90 and 2,976.74 is: 4,108.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,215.37 : 7,197.90 = 2,976.74 : x
  2. Step 2: Convert to fraction form
    5,215.37/7,197.90 = 2,976.74/x
  3. Step 3: Cross multiply
    5,215.37x = 7,197.90 × 2,976.74
  4. Step 4: Simplify right side
    5,215.37x = 21,426,276.85
  5. Step 5: Solve for x
    x = 21,426,276.85/5,215.37
  6. Step 6: Final answer
    x = 4,108.29

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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.