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Finding the Fourth Proportional to 7,941.80, 10,959.90 and 4,404.80

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Solution

The fourth proportional to 7,941.80, 10,959.90 and 4,404.80 is: 6,078.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,941.80 : 10,959.90 = 4,404.80 : x
  2. Step 2: Convert to fraction form
    7,941.80/10,959.90 = 4,404.80/x
  3. Step 3: Cross multiply
    7,941.80x = 10,959.90 × 4,404.80
  4. Step 4: Simplify right side
    7,941.80x = 48,276,167.52
  5. Step 5: Solve for x
    x = 48,276,167.52/7,941.80
  6. Step 6: Final answer
    x = 6,078.74

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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.