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Finding the Fourth Proportional to 7,858.57, 10,844.53 and 4,321.57

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Solution

The fourth proportional to 7,858.57, 10,844.53 and 4,321.57 is: 5,963.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,858.57 : 10,844.53 = 4,321.57 : x
  2. Step 2: Convert to fraction form
    7,858.57/10,844.53 = 4,321.57/x
  3. Step 3: Cross multiply
    7,858.57x = 10,844.53 × 4,321.57
  4. Step 4: Simplify right side
    7,858.57x = 46,865,373.90
  5. Step 5: Solve for x
    x = 46,865,373.90/7,858.57
  6. Step 6: Final answer
    x = 5,963.60

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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.