Home / 2,420.05-3,339.40-1,425.64

Finding the Fourth Proportional to 2,420.05, 3,339.40 and 1,425.64

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Solution

The fourth proportional to 2,420.05, 3,339.40 and 1,425.64 is: 1,967.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,420.05 : 3,339.40 = 1,425.64 : x
  2. Step 2: Convert to fraction form
    2,420.05/3,339.40 = 1,425.64/x
  3. Step 3: Cross multiply
    2,420.05x = 3,339.40 × 1,425.64
  4. Step 4: Simplify right side
    2,420.05x = 4,760,782.22
  5. Step 5: Solve for x
    x = 4,760,782.22/2,420.05
  6. Step 6: Final answer
    x = 1,967.22

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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.