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Finding the Fourth Proportional to 7,854.64, 10,841.44 and 4,868.72

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Solution

The fourth proportional to 7,854.64, 10,841.44 and 4,868.72 is: 6,720.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,854.64 : 10,841.44 = 4,868.72 : x
  2. Step 2: Convert to fraction form
    7,854.64/10,841.44 = 4,868.72/x
  3. Step 3: Cross multiply
    7,854.64x = 10,841.44 × 4,868.72
  4. Step 4: Simplify right side
    7,854.64x = 52,783,935.76
  5. Step 5: Solve for x
    x = 52,783,935.76/7,854.64
  6. Step 6: Final answer
    x = 6,720.10

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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.