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Finding the Fourth Proportional to 1,860.56, 2,790.85 and 627.98

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Solution

The fourth proportional to 1,860.56, 2,790.85 and 627.98 is: 941.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,860.56 : 2,790.85 = 627.98 : x
  2. Step 2: Convert to fraction form
    1,860.56/2,790.85 = 627.98/x
  3. Step 3: Cross multiply
    1,860.56x = 2,790.85 × 627.98
  4. Step 4: Simplify right side
    1,860.56x = 1,752,597.98
  5. Step 5: Solve for x
    x = 1,752,597.98/1,860.56
  6. Step 6: Final answer
    x = 941.97

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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.