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Finding the Fourth Proportional to 6,140.57, 9,196.79 and 4,821.30

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Solution

The fourth proportional to 6,140.57, 9,196.79 and 4,821.30 is: 7,220.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,140.57 : 9,196.79 = 4,821.30 : x
  2. Step 2: Convert to fraction form
    6,140.57/9,196.79 = 4,821.30/x
  3. Step 3: Cross multiply
    6,140.57x = 9,196.79 × 4,821.30
  4. Step 4: Simplify right side
    6,140.57x = 44,340,459.52
  5. Step 5: Solve for x
    x = 44,340,459.52/6,140.57
  6. Step 6: Final answer
    x = 7,220.91

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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.