Home / 1,601.75-2,390.05-1,438.13

Finding the Fourth Proportional to 1,601.75, 2,390.05 and 1,438.13

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Solution

The fourth proportional to 1,601.75, 2,390.05 and 1,438.13 is: 2,145.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,601.75 : 2,390.05 = 1,438.13 : x
  2. Step 2: Convert to fraction form
    1,601.75/2,390.05 = 1,438.13/x
  3. Step 3: Cross multiply
    1,601.75x = 2,390.05 × 1,438.13
  4. Step 4: Simplify right side
    1,601.75x = 3,437,202.61
  5. Step 5: Solve for x
    x = 3,437,202.61/1,601.75
  6. Step 6: Final answer
    x = 2,145.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.