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Finding the Fourth Proportional to 2,455.58, 3,683.81 and 813.30

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Solution

The fourth proportional to 2,455.58, 3,683.81 and 813.30 is: 1,220.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,455.58 : 3,683.81 = 813.30 : x
  2. Step 2: Convert to fraction form
    2,455.58/3,683.81 = 813.30/x
  3. Step 3: Cross multiply
    2,455.58x = 3,683.81 × 813.30
  4. Step 4: Simplify right side
    2,455.58x = 2,996,042.67
  5. Step 5: Solve for x
    x = 2,996,042.67/2,455.58
  6. Step 6: Final answer
    x = 1,220.10

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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.