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Finding the Fourth Proportional to 7,890.60, 10,888.54 and 4,353.81

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Solution

The fourth proportional to 7,890.60, 10,888.54 and 4,353.81 is: 6,007.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,890.60 : 10,888.54 = 4,353.81 : x
  2. Step 2: Convert to fraction form
    7,890.60/10,888.54 = 4,353.81/x
  3. Step 3: Cross multiply
    7,890.60x = 10,888.54 × 4,353.81
  4. Step 4: Simplify right side
    7,890.60x = 47,406,634.34
  5. Step 5: Solve for x
    x = 47,406,634.34/7,890.60
  6. Step 6: Final answer
    x = 6,007.99

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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.