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Finding the Fourth Proportional to 8,013.70, 11,058.85 and 4,428.90

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Solution

The fourth proportional to 8,013.70, 11,058.85 and 4,428.90 is: 6,111.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,013.70 : 11,058.85 = 4,428.90 : x
  2. Step 2: Convert to fraction form
    8,013.70/11,058.85 = 4,428.90/x
  3. Step 3: Cross multiply
    8,013.70x = 11,058.85 × 4,428.90
  4. Step 4: Simplify right side
    8,013.70x = 48,978,521.39
  5. Step 5: Solve for x
    x = 48,978,521.39/8,013.70
  6. Step 6: Final answer
    x = 6,111.85

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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.