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Finding the Fourth Proportional to 7,603.90, 10,488.10 and 6,976.50

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Solution

The fourth proportional to 7,603.90, 10,488.10 and 6,976.50 is: 9,622.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,603.90 : 10,488.10 = 6,976.50 : x
  2. Step 2: Convert to fraction form
    7,603.90/10,488.10 = 6,976.50/x
  3. Step 3: Cross multiply
    7,603.90x = 10,488.10 × 6,976.50
  4. Step 4: Simplify right side
    7,603.90x = 73,170,229.65
  5. Step 5: Solve for x
    x = 73,170,229.65/7,603.90
  6. Step 6: Final answer
    x = 9,622.72

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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.