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Finding the Fourth Proportional to 7,018.22, 9,675.42 and 4,890.68

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Solution

The fourth proportional to 7,018.22, 9,675.42 and 4,890.68 is: 6,742.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,018.22 : 9,675.42 = 4,890.68 : x
  2. Step 2: Convert to fraction form
    7,018.22/9,675.42 = 4,890.68/x
  3. Step 3: Cross multiply
    7,018.22x = 9,675.42 × 4,890.68
  4. Step 4: Simplify right side
    7,018.22x = 47,319,393.92
  5. Step 5: Solve for x
    x = 47,319,393.92/7,018.22
  6. Step 6: Final answer
    x = 6,742.36

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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.