Home / 5,455.84-8,180.79-1,945.30

Finding the Fourth Proportional to 5,455.84, 8,180.79 and 1,945.30

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Solution

The fourth proportional to 5,455.84, 8,180.79 and 1,945.30 is: 2,916.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,455.84 : 8,180.79 = 1,945.30 : x
  2. Step 2: Convert to fraction form
    5,455.84/8,180.79 = 1,945.30/x
  3. Step 3: Cross multiply
    5,455.84x = 8,180.79 × 1,945.30
  4. Step 4: Simplify right side
    5,455.84x = 15,914,090.79
  5. Step 5: Solve for x
    x = 15,914,090.79/5,455.84
  6. Step 6: Final answer
    x = 2,916.89

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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.