Home / 2,477.12-3,419.21-1,638.56

Finding the Fourth Proportional to 2,477.12, 3,419.21 and 1,638.56

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Solution

The fourth proportional to 2,477.12, 3,419.21 and 1,638.56 is: 2,261.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,477.12 : 3,419.21 = 1,638.56 : x
  2. Step 2: Convert to fraction form
    2,477.12/3,419.21 = 1,638.56/x
  3. Step 3: Cross multiply
    2,477.12x = 3,419.21 × 1,638.56
  4. Step 4: Simplify right side
    2,477.12x = 5,602,593.38
  5. Step 5: Solve for x
    x = 5,602,593.38/2,477.12
  6. Step 6: Final answer
    x = 2,261.74

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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.