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Finding the Fourth Proportional to 6,930.80, 9,564.58 and 3,787.08

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Solution

The fourth proportional to 6,930.80, 9,564.58 and 3,787.08 is: 5,226.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,930.80 : 9,564.58 = 3,787.08 : x
  2. Step 2: Convert to fraction form
    6,930.80/9,564.58 = 3,787.08/x
  3. Step 3: Cross multiply
    6,930.80x = 9,564.58 × 3,787.08
  4. Step 4: Simplify right side
    6,930.80x = 36,221,829.63
  5. Step 5: Solve for x
    x = 36,221,829.63/6,930.80
  6. Step 6: Final answer
    x = 5,226.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.