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Finding the Fourth Proportional to 7,985.34, 11,018.70 and 4,448.34

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Solution

The fourth proportional to 7,985.34, 11,018.70 and 4,448.34 is: 6,138.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,985.34 : 11,018.70 = 4,448.34 : x
  2. Step 2: Convert to fraction form
    7,985.34/11,018.70 = 4,448.34/x
  3. Step 3: Cross multiply
    7,985.34x = 11,018.70 × 4,448.34
  4. Step 4: Simplify right side
    7,985.34x = 49,014,923.96
  5. Step 5: Solve for x
    x = 49,014,923.96/7,985.34
  6. Step 6: Final answer
    x = 6,138.11

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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.