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Finding the Fourth Proportional to 7,190.10, 9,920.88 and 5,513.40

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Solution

The fourth proportional to 7,190.10, 9,920.88 and 5,513.40 is: 7,607.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,190.10 : 9,920.88 = 5,513.40 : x
  2. Step 2: Convert to fraction form
    7,190.10/9,920.88 = 5,513.40/x
  3. Step 3: Cross multiply
    7,190.10x = 9,920.88 × 5,513.40
  4. Step 4: Simplify right side
    7,190.10x = 54,697,779.79
  5. Step 5: Solve for x
    x = 54,697,779.79/7,190.10
  6. Step 6: Final answer
    x = 7,607.37

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.