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Finding the Fourth Proportional to 7,201.89, 9,938.79 and 4,368.90

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Solution

The fourth proportional to 7,201.89, 9,938.79 and 4,368.90 is: 6,029.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,201.89 : 9,938.79 = 4,368.90 : x
  2. Step 2: Convert to fraction form
    7,201.89/9,938.79 = 4,368.90/x
  3. Step 3: Cross multiply
    7,201.89x = 9,938.79 × 4,368.90
  4. Step 4: Simplify right side
    7,201.89x = 43,421,579.63
  5. Step 5: Solve for x
    x = 43,421,579.63/7,201.89
  6. Step 6: Final answer
    x = 6,029.19

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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.