Home / 2,420.23-3,339.78-1,425.28

Finding the Fourth Proportional to 2,420.23, 3,339.78 and 1,425.28

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Solution

The fourth proportional to 2,420.23, 3,339.78 and 1,425.28 is: 1,966.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,420.23 : 3,339.78 = 1,425.28 : x
  2. Step 2: Convert to fraction form
    2,420.23/3,339.78 = 1,425.28/x
  3. Step 3: Cross multiply
    2,420.23x = 3,339.78 × 1,425.28
  4. Step 4: Simplify right side
    2,420.23x = 4,760,104.94
  5. Step 5: Solve for x
    x = 4,760,104.94/2,420.23
  6. Step 6: Final answer
    x = 1,966.80

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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.