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Finding the Fourth Proportional to 6,579.40, 9,866.70 and 3,291.40

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Solution

The fourth proportional to 6,579.40, 9,866.70 and 3,291.40 is: 4,935.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,579.40 : 9,866.70 = 3,291.40 : x
  2. Step 2: Convert to fraction form
    6,579.40/9,866.70 = 3,291.40/x
  3. Step 3: Cross multiply
    6,579.40x = 9,866.70 × 3,291.40
  4. Step 4: Simplify right side
    6,579.40x = 32,475,256.38
  5. Step 5: Solve for x
    x = 32,475,256.38/6,579.40
  6. Step 6: Final answer
    x = 4,935.90

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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.