Home / 2,438.73-3,365.51-1,390.77

Finding the Fourth Proportional to 2,438.73, 3,365.51 and 1,390.77

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Solution

The fourth proportional to 2,438.73, 3,365.51 and 1,390.77 is: 1,919.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,438.73 : 3,365.51 = 1,390.77 : x
  2. Step 2: Convert to fraction form
    2,438.73/3,365.51 = 1,390.77/x
  3. Step 3: Cross multiply
    2,438.73x = 3,365.51 × 1,390.77
  4. Step 4: Simplify right side
    2,438.73x = 4,680,643.39
  5. Step 5: Solve for x
    x = 4,680,643.39/2,438.73
  6. Step 6: Final answer
    x = 1,919.30

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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.