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Finding the Fourth Proportional to 7,873.70, 10,865.70 and 4,336.88

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Solution

The fourth proportional to 7,873.70, 10,865.70 and 4,336.88 is: 5,984.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,873.70 : 10,865.70 = 4,336.88 : x
  2. Step 2: Convert to fraction form
    7,873.70/10,865.70 = 4,336.88/x
  3. Step 3: Cross multiply
    7,873.70x = 10,865.70 × 4,336.88
  4. Step 4: Simplify right side
    7,873.70x = 47,123,182.69
  5. Step 5: Solve for x
    x = 47,123,182.69/7,873.70
  6. Step 6: Final answer
    x = 5,984.89

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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.