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Finding the Fourth Proportional to 7,855.68, 10,840.84 and 4,318.94

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Solution

The fourth proportional to 7,855.68, 10,840.84 and 4,318.94 is: 5,960.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,855.68 : 10,840.84 = 4,318.94 : x
  2. Step 2: Convert to fraction form
    7,855.68/10,840.84 = 4,318.94/x
  3. Step 3: Cross multiply
    7,855.68x = 10,840.84 × 4,318.94
  4. Step 4: Simplify right side
    7,855.68x = 46,820,937.51
  5. Step 5: Solve for x
    x = 46,820,937.51/7,855.68
  6. Step 6: Final answer
    x = 5,960.14

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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.