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Finding the Fourth Proportional to 6,987.04, 9,639.76 and 4,745.03

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Solution

The fourth proportional to 6,987.04, 9,639.76 and 4,745.03 is: 6,546.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,987.04 : 9,639.76 = 4,745.03 : x
  2. Step 2: Convert to fraction form
    6,987.04/9,639.76 = 4,745.03/x
  3. Step 3: Cross multiply
    6,987.04x = 9,639.76 × 4,745.03
  4. Step 4: Simplify right side
    6,987.04x = 45,740,950.39
  5. Step 5: Solve for x
    x = 45,740,950.39/6,987.04
  6. Step 6: Final answer
    x = 6,546.54

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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.