Home / 2,420.92-3,317.60-2,187.64

Finding the Fourth Proportional to 2,420.92, 3,317.60 and 2,187.64

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Solution

The fourth proportional to 2,420.92, 3,317.60 and 2,187.64 is: 2,997.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,420.92 : 3,317.60 = 2,187.64 : x
  2. Step 2: Convert to fraction form
    2,420.92/3,317.60 = 2,187.64/x
  3. Step 3: Cross multiply
    2,420.92x = 3,317.60 × 2,187.64
  4. Step 4: Simplify right side
    2,420.92x = 7,257,714.46
  5. Step 5: Solve for x
    x = 7,257,714.46/2,420.92
  6. Step 6: Final answer
    x = 2,997.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.