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Finding the Fourth Proportional to 6,603.15, 9,898.07 and 4,139.70

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Solution

The fourth proportional to 6,603.15, 9,898.07 and 4,139.70 is: 6,205.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,603.15 : 9,898.07 = 4,139.70 : x
  2. Step 2: Convert to fraction form
    6,603.15/9,898.07 = 4,139.70/x
  3. Step 3: Cross multiply
    6,603.15x = 9,898.07 × 4,139.70
  4. Step 4: Simplify right side
    6,603.15x = 40,975,040.38
  5. Step 5: Solve for x
    x = 40,975,040.38/6,603.15
  6. Step 6: Final answer
    x = 6,205.38

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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.