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Finding the Fourth Proportional to 5,903.90, 8,869.05 and 4,931.90

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Solution

The fourth proportional to 5,903.90, 8,869.05 and 4,931.90 is: 7,408.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,903.90 : 8,869.05 = 4,931.90 : x
  2. Step 2: Convert to fraction form
    5,903.90/8,869.05 = 4,931.90/x
  3. Step 3: Cross multiply
    5,903.90x = 8,869.05 × 4,931.90
  4. Step 4: Simplify right side
    5,903.90x = 43,741,267.70
  5. Step 5: Solve for x
    x = 43,741,267.70/5,903.90
  6. Step 6: Final answer
    x = 7,408.88

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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.