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Finding the Fourth Proportional to 7,479.81, 11,220.08 and 2,801.03

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Solution

The fourth proportional to 7,479.81, 11,220.08 and 2,801.03 is: 4,201.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,479.81 : 11,220.08 = 2,801.03 : x
  2. Step 2: Convert to fraction form
    7,479.81/11,220.08 = 2,801.03/x
  3. Step 3: Cross multiply
    7,479.81x = 11,220.08 × 2,801.03
  4. Step 4: Simplify right side
    7,479.81x = 31,427,710.58
  5. Step 5: Solve for x
    x = 31,427,710.58/7,479.81
  6. Step 6: Final answer
    x = 4,201.67

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1.5x scale

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.