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Finding the Fourth Proportional to 7,893.70, 10,893.31 and 4,356.91

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Solution

The fourth proportional to 7,893.70, 10,893.31 and 4,356.91 is: 6,012.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,893.70 : 10,893.31 = 4,356.91 : x
  2. Step 2: Convert to fraction form
    7,893.70/10,893.31 = 4,356.91/x
  3. Step 3: Cross multiply
    7,893.70x = 10,893.31 × 4,356.91
  4. Step 4: Simplify right side
    7,893.70x = 47,461,216.89
  5. Step 5: Solve for x
    x = 47,461,216.89/7,893.70
  6. Step 6: Final answer
    x = 6,012.54

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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.