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Finding the Fourth Proportional to 8,745.90, 13,119 and 4,874.91

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Solution

The fourth proportional to 8,745.90, 13,119 and 4,874.91 is: 7,312.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,745.90 : 13,119 = 4,874.91 : x
  2. Step 2: Convert to fraction form
    8,745.90/13,119 = 4,874.91/x
  3. Step 3: Cross multiply
    8,745.90x = 13,119 × 4,874.91
  4. Step 4: Simplify right side
    8,745.90x = 63,953,944.29
  5. Step 5: Solve for x
    x = 63,953,944.29/8,745.90
  6. Step 6: Final answer
    x = 7,312.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.