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Finding the Fourth Proportional to 1,747.81, 2,622.60 and 774.60

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Solution

The fourth proportional to 1,747.81, 2,622.60 and 774.60 is: 1,162.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,747.81 : 2,622.60 = 774.60 : x
  2. Step 2: Convert to fraction form
    1,747.81/2,622.60 = 774.60/x
  3. Step 3: Cross multiply
    1,747.81x = 2,622.60 × 774.60
  4. Step 4: Simplify right side
    1,747.81x = 2,031,465.96
  5. Step 5: Solve for x
    x = 2,031,465.96/1,747.81
  6. Step 6: Final answer
    x = 1,162.29

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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.