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Finding the Fourth Proportional to 7,351.60, 11,027.40 and 2,421.40

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Solution

The fourth proportional to 7,351.60, 11,027.40 and 2,421.40 is: 3,632.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,351.60 : 11,027.40 = 2,421.40 : x
  2. Step 2: Convert to fraction form
    7,351.60/11,027.40 = 2,421.40/x
  3. Step 3: Cross multiply
    7,351.60x = 11,027.40 × 2,421.40
  4. Step 4: Simplify right side
    7,351.60x = 26,701,746.36
  5. Step 5: Solve for x
    x = 26,701,746.36/7,351.60
  6. Step 6: Final answer
    x = 3,632.10

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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.