Home / 2,420.91-3,340.65-1,426.03

Finding the Fourth Proportional to 2,420.91, 3,340.65 and 1,426.03

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Solution

The fourth proportional to 2,420.91, 3,340.65 and 1,426.03 is: 1,967.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,420.91 : 3,340.65 = 1,426.03 : x
  2. Step 2: Convert to fraction form
    2,420.91/3,340.65 = 1,426.03/x
  3. Step 3: Cross multiply
    2,420.91x = 3,340.65 × 1,426.03
  4. Step 4: Simplify right side
    2,420.91x = 4,763,867.12
  5. Step 5: Solve for x
    x = 4,763,867.12/2,420.91
  6. Step 6: Final answer
    x = 1,967.80

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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.