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Finding the Fourth Proportional to 7,700.64, 10,626.88 and 4,163.84

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Solution

The fourth proportional to 7,700.64, 10,626.88 and 4,163.84 is: 5,746.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,700.64 : 10,626.88 = 4,163.84 : x
  2. Step 2: Convert to fraction form
    7,700.64/10,626.88 = 4,163.84/x
  3. Step 3: Cross multiply
    7,700.64x = 10,626.88 × 4,163.84
  4. Step 4: Simplify right side
    7,700.64x = 44,248,628.02
  5. Step 5: Solve for x
    x = 44,248,628.02/7,700.64
  6. Step 6: Final answer
    x = 5,746.10

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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.