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Finding the Fourth Proportional to 8,749.95, 12,079.55 and 7,029.81

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Solution

The fourth proportional to 8,749.95, 12,079.55 and 7,029.81 is: 9,704.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,749.95 : 12,079.55 = 7,029.81 : x
  2. Step 2: Convert to fraction form
    8,749.95/12,079.55 = 7,029.81/x
  3. Step 3: Cross multiply
    8,749.95x = 12,079.55 × 7,029.81
  4. Step 4: Simplify right side
    8,749.95x = 84,916,906.24
  5. Step 5: Solve for x
    x = 84,916,906.24/8,749.95
  6. Step 6: Final answer
    x = 9,704.84

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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.