Home / 8,820.90-12,172.98-4,842.38

Finding the Fourth Proportional to 8,820.90, 12,172.98 and 4,842.38

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Solution

The fourth proportional to 8,820.90, 12,172.98 and 4,842.38 is: 6,682.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,820.90 : 12,172.98 = 4,842.38 : x
  2. Step 2: Convert to fraction form
    8,820.90/12,172.98 = 4,842.38/x
  3. Step 3: Cross multiply
    8,820.90x = 12,172.98 × 4,842.38
  4. Step 4: Simplify right side
    8,820.90x = 58,946,134.03
  5. Step 5: Solve for x
    x = 58,946,134.03/8,820.90
  6. Step 6: Final answer
    x = 6,682.55

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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.