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Finding the Fourth Proportional to 3,090.30, 4,636.26 and 898.98

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Solution

The fourth proportional to 3,090.30, 4,636.26 and 898.98 is: 1,348.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,090.30 : 4,636.26 = 898.98 : x
  2. Step 2: Convert to fraction form
    3,090.30/4,636.26 = 898.98/x
  3. Step 3: Cross multiply
    3,090.30x = 4,636.26 × 898.98
  4. Step 4: Simplify right side
    3,090.30x = 4,167,905.01
  5. Step 5: Solve for x
    x = 4,167,905.01/3,090.30
  6. Step 6: Final answer
    x = 1,348.71

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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.