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Finding the Fourth Proportional to 6,779.49, 9,354.08 and 3,945.14

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Solution

The fourth proportional to 6,779.49, 9,354.08 and 3,945.14 is: 5,443.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,779.49 : 9,354.08 = 3,945.14 : x
  2. Step 2: Convert to fraction form
    6,779.49/9,354.08 = 3,945.14/x
  3. Step 3: Cross multiply
    6,779.49x = 9,354.08 × 3,945.14
  4. Step 4: Simplify right side
    6,779.49x = 36,903,155.17
  5. Step 5: Solve for x
    x = 36,903,155.17/6,779.49
  6. Step 6: Final answer
    x = 5,443.35

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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.