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Finding the Fourth Proportional to 8,367.90, 12,538.50 and 4,419.01

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Solution

The fourth proportional to 8,367.90, 12,538.50 and 4,419.01 is: 6,621.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,367.90 : 12,538.50 = 4,419.01 : x
  2. Step 2: Convert to fraction form
    8,367.90/12,538.50 = 4,419.01/x
  3. Step 3: Cross multiply
    8,367.90x = 12,538.50 × 4,419.01
  4. Step 4: Simplify right side
    8,367.90x = 55,407,756.89
  5. Step 5: Solve for x
    x = 55,407,756.89/8,367.90
  6. Step 6: Final answer
    x = 6,621.47

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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.