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Finding the Fourth Proportional to 7,006.88, 9,669.51 and 3,820.21

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Solution

The fourth proportional to 7,006.88, 9,669.51 and 3,820.21 is: 5,271.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,006.88 : 9,669.51 = 3,820.21 : x
  2. Step 2: Convert to fraction form
    7,006.88/9,669.51 = 3,820.21/x
  3. Step 3: Cross multiply
    7,006.88x = 9,669.51 × 3,820.21
  4. Step 4: Simplify right side
    7,006.88x = 36,939,500.90
  5. Step 5: Solve for x
    x = 36,939,500.90/7,006.88
  6. Step 6: Final answer
    x = 5,271.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.