Home / 2,557.97-3,530.01-1,438.90

Finding the Fourth Proportional to 2,557.97, 3,530.01 and 1,438.90

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Solution

The fourth proportional to 2,557.97, 3,530.01 and 1,438.90 is: 1,985.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,557.97 : 3,530.01 = 1,438.90 : x
  2. Step 2: Convert to fraction form
    2,557.97/3,530.01 = 1,438.90/x
  3. Step 3: Cross multiply
    2,557.97x = 3,530.01 × 1,438.90
  4. Step 4: Simplify right side
    2,557.97x = 5,079,327.96
  5. Step 5: Solve for x
    x = 5,079,327.96/2,557.97
  6. Step 6: Final answer
    x = 1,985.69

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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.