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Finding the Fourth Proportional to 6,672.40, 10,000.20 and 3,386.40

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Solution

The fourth proportional to 6,672.40, 10,000.20 and 3,386.40 is: 5,075.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,672.40 : 10,000.20 = 3,386.40 : x
  2. Step 2: Convert to fraction form
    6,672.40/10,000.20 = 3,386.40/x
  3. Step 3: Cross multiply
    6,672.40x = 10,000.20 × 3,386.40
  4. Step 4: Simplify right side
    6,672.40x = 33,864,677.28
  5. Step 5: Solve for x
    x = 33,864,677.28/6,672.40
  6. Step 6: Final answer
    x = 5,075.34

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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.