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Finding the Fourth Proportional to 7,873.75, 10,865.78 and 4,336.95

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Solution

The fourth proportional to 7,873.75, 10,865.78 and 4,336.95 is: 5,984.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,873.75 : 10,865.78 = 4,336.95 : x
  2. Step 2: Convert to fraction form
    7,873.75/10,865.78 = 4,336.95/x
  3. Step 3: Cross multiply
    7,873.75x = 10,865.78 × 4,336.95
  4. Step 4: Simplify right side
    7,873.75x = 47,124,344.57
  5. Step 5: Solve for x
    x = 47,124,344.57/7,873.75
  6. Step 6: Final answer
    x = 5,984.99

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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.