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Finding the Fourth Proportional to 7,873.60, 10,865.92 and 4,336.96

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Solution

The fourth proportional to 7,873.60, 10,865.92 and 4,336.96 is: 5,985.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,873.60 : 10,865.92 = 4,336.96 : x
  2. Step 2: Convert to fraction form
    7,873.60/10,865.92 = 4,336.96/x
  3. Step 3: Cross multiply
    7,873.60x = 10,865.92 × 4,336.96
  4. Step 4: Simplify right side
    7,873.60x = 47,125,060.40
  5. Step 5: Solve for x
    x = 47,125,060.40/7,873.60
  6. Step 6: Final answer
    x = 5,985.20

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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.