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Finding the Fourth Proportional to 7,873.40, 10,865.22 and 4,336.54

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Solution

The fourth proportional to 7,873.40, 10,865.22 and 4,336.54 is: 5,984.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,873.40 : 10,865.22 = 4,336.54 : x
  2. Step 2: Convert to fraction form
    7,873.40/10,865.22 = 4,336.54/x
  3. Step 3: Cross multiply
    7,873.40x = 10,865.22 × 4,336.54
  4. Step 4: Simplify right side
    7,873.40x = 47,117,461.14
  5. Step 5: Solve for x
    x = 47,117,461.14/7,873.40
  6. Step 6: Final answer
    x = 5,984.39

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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.