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Finding the Fourth Proportional to 8,603.79, 12,903.30 and 3,337.79

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Solution

The fourth proportional to 8,603.79, 12,903.30 and 3,337.79 is: 5,005.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,603.79 : 12,903.30 = 3,337.79 : x
  2. Step 2: Convert to fraction form
    8,603.79/12,903.30 = 3,337.79/x
  3. Step 3: Cross multiply
    8,603.79x = 12,903.30 × 3,337.79
  4. Step 4: Simplify right side
    8,603.79x = 43,068,568.21
  5. Step 5: Solve for x
    x = 43,068,568.21/8,603.79
  6. Step 6: Final answer
    x = 5,005.76

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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.