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Finding the Fourth Proportional to 4,553.78, 6,830.66 and 1,920.58

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Solution

The fourth proportional to 4,553.78, 6,830.66 and 1,920.58 is: 2,880.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,553.78 : 6,830.66 = 1,920.58 : x
  2. Step 2: Convert to fraction form
    4,553.78/6,830.66 = 1,920.58/x
  3. Step 3: Cross multiply
    4,553.78x = 6,830.66 × 1,920.58
  4. Step 4: Simplify right side
    4,553.78x = 13,118,851.84
  5. Step 5: Solve for x
    x = 13,118,851.84/4,553.78
  6. Step 6: Final answer
    x = 2,880.87

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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.