Home / 2,938.83-4,055.42-1,679.64

Finding the Fourth Proportional to 2,938.83, 4,055.42 and 1,679.64

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Solution

The fourth proportional to 2,938.83, 4,055.42 and 1,679.64 is: 2,317.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,938.83 : 4,055.42 = 1,679.64 : x
  2. Step 2: Convert to fraction form
    2,938.83/4,055.42 = 1,679.64/x
  3. Step 3: Cross multiply
    2,938.83x = 4,055.42 × 1,679.64
  4. Step 4: Simplify right side
    2,938.83x = 6,811,637.25
  5. Step 5: Solve for x
    x = 6,811,637.25/2,938.83
  6. Step 6: Final answer
    x = 2,317.81

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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.