Home / 1,626.98-2,438.36-1,188.20

Finding the Fourth Proportional to 1,626.98, 2,438.36 and 1,188.20

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Solution

The fourth proportional to 1,626.98, 2,438.36 and 1,188.20 is: 1,780.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,626.98 : 2,438.36 = 1,188.20 : x
  2. Step 2: Convert to fraction form
    1,626.98/2,438.36 = 1,188.20/x
  3. Step 3: Cross multiply
    1,626.98x = 2,438.36 × 1,188.20
  4. Step 4: Simplify right side
    1,626.98x = 2,897,241.22
  5. Step 5: Solve for x
    x = 2,897,241.22/1,626.98
  6. Step 6: Final answer
    x = 1,780.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.