Home / 3,478.48-5,216.44-1,426.64

Finding the Fourth Proportional to 3,478.48, 5,216.44 and 1,426.64

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Solution

The fourth proportional to 3,478.48, 5,216.44 and 1,426.64 is: 2,139.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,478.48 : 5,216.44 = 1,426.64 : x
  2. Step 2: Convert to fraction form
    3,478.48/5,216.44 = 1,426.64/x
  3. Step 3: Cross multiply
    3,478.48x = 5,216.44 × 1,426.64
  4. Step 4: Simplify right side
    3,478.48x = 7,441,981.96
  5. Step 5: Solve for x
    x = 7,441,981.96/3,478.48
  6. Step 6: Final answer
    x = 2,139.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.