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Finding the Fourth Proportional to 2,890.58, 4,334.58 and 1,330.20

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Solution

The fourth proportional to 2,890.58, 4,334.58 and 1,330.20 is: 1,994.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,890.58 : 4,334.58 = 1,330.20 : x
  2. Step 2: Convert to fraction form
    2,890.58/4,334.58 = 1,330.20/x
  3. Step 3: Cross multiply
    2,890.58x = 4,334.58 × 1,330.20
  4. Step 4: Simplify right side
    2,890.58x = 5,765,858.32
  5. Step 5: Solve for x
    x = 5,765,858.32/2,890.58
  6. Step 6: Final answer
    x = 1,994.71

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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.