Home / 3,419.30-4,720.73-2,478.15

Finding the Fourth Proportional to 3,419.30, 4,720.73 and 2,478.15

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Solution

The fourth proportional to 3,419.30, 4,720.73 and 2,478.15 is: 3,421.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,419.30 : 4,720.73 = 2,478.15 : x
  2. Step 2: Convert to fraction form
    3,419.30/4,720.73 = 2,478.15/x
  3. Step 3: Cross multiply
    3,419.30x = 4,720.73 × 2,478.15
  4. Step 4: Simplify right side
    3,419.30x = 11,698,664.66
  5. Step 5: Solve for x
    x = 11,698,664.66/3,419.30
  6. Step 6: Final answer
    x = 3,421.37

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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.