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Finding the Fourth Proportional to 7,873.77, 10,865.85 and 4,729.98

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Solution

The fourth proportional to 7,873.77, 10,865.85 and 4,729.98 is: 6,527.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,873.77 : 10,865.85 = 4,729.98 : x
  2. Step 2: Convert to fraction form
    7,873.77/10,865.85 = 4,729.98/x
  3. Step 3: Cross multiply
    7,873.77x = 10,865.85 × 4,729.98
  4. Step 4: Simplify right side
    7,873.77x = 51,395,253.18
  5. Step 5: Solve for x
    x = 51,395,253.18/7,873.77
  6. Step 6: Final answer
    x = 6,527.40

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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.