Home / 1,845.20-2,768.70-1,406.30

Finding the Fourth Proportional to 1,845.20, 2,768.70 and 1,406.30

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Solution

The fourth proportional to 1,845.20, 2,768.70 and 1,406.30 is: 2,110.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,845.20 : 2,768.70 = 1,406.30 : x
  2. Step 2: Convert to fraction form
    1,845.20/2,768.70 = 1,406.30/x
  3. Step 3: Cross multiply
    1,845.20x = 2,768.70 × 1,406.30
  4. Step 4: Simplify right side
    1,845.20x = 3,893,622.81
  5. Step 5: Solve for x
    x = 3,893,622.81/1,845.20
  6. Step 6: Final answer
    x = 2,110.14

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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.