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Finding the Fourth Proportional to 6,987.96, 9,647.36 and 4,633.28

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Solution

The fourth proportional to 6,987.96, 9,647.36 and 4,633.28 is: 6,396.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,987.96 : 9,647.36 = 4,633.28 : x
  2. Step 2: Convert to fraction form
    6,987.96/9,647.36 = 4,633.28/x
  3. Step 3: Cross multiply
    6,987.96x = 9,647.36 × 4,633.28
  4. Step 4: Simplify right side
    6,987.96x = 44,698,920.14
  5. Step 5: Solve for x
    x = 44,698,920.14/6,987.96
  6. Step 6: Final answer
    x = 6,396.56

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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.