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Finding the Fourth Proportional to 7,459.90, 11,189.00 and 1,913.37

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Solution

The fourth proportional to 7,459.90, 11,189.00 and 1,913.37 is: 2,869.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,459.90 : 11,189.00 = 1,913.37 : x
  2. Step 2: Convert to fraction form
    7,459.90/11,189.00 = 1,913.37/x
  3. Step 3: Cross multiply
    7,459.90x = 11,189.00 × 1,913.37
  4. Step 4: Simplify right side
    7,459.90x = 21,408,701.71
  5. Step 5: Solve for x
    x = 21,408,701.71/7,459.90
  6. Step 6: Final answer
    x = 2,869.84

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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.