Home / 3,420.64-4,720.60-1,908.26

Finding the Fourth Proportional to 3,420.64, 4,720.60 and 1,908.26

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Solution

The fourth proportional to 3,420.64, 4,720.60 and 1,908.26 is: 2,633.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,420.64 : 4,720.60 = 1,908.26 : x
  2. Step 2: Convert to fraction form
    3,420.64/4,720.60 = 1,908.26/x
  3. Step 3: Cross multiply
    3,420.64x = 4,720.60 × 1,908.26
  4. Step 4: Simplify right side
    3,420.64x = 9,008,132.16
  5. Step 5: Solve for x
    x = 9,008,132.16/3,420.64
  6. Step 6: Final answer
    x = 2,633.46

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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.