Home / 2,420.48-3,341.76-2,171.36

Finding the Fourth Proportional to 2,420.48, 3,341.76 and 2,171.36

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Solution

The fourth proportional to 2,420.48, 3,341.76 and 2,171.36 is: 2,997.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,420.48 : 3,341.76 = 2,171.36 : x
  2. Step 2: Convert to fraction form
    2,420.48/3,341.76 = 2,171.36/x
  3. Step 3: Cross multiply
    2,420.48x = 3,341.76 × 2,171.36
  4. Step 4: Simplify right side
    2,420.48x = 7,256,163.99
  5. Step 5: Solve for x
    x = 7,256,163.99/2,420.48
  6. Step 6: Final answer
    x = 2,997.82

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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.