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Finding the Fourth Proportional to 6,878.13, 9,491.93 and 3,734.31

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Solution

The fourth proportional to 6,878.13, 9,491.93 and 3,734.31 is: 5,153.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,878.13 : 9,491.93 = 3,734.31 : x
  2. Step 2: Convert to fraction form
    6,878.13/9,491.93 = 3,734.31/x
  3. Step 3: Cross multiply
    6,878.13x = 9,491.93 × 3,734.31
  4. Step 4: Simplify right side
    6,878.13x = 35,445,809.12
  5. Step 5: Solve for x
    x = 35,445,809.12/6,878.13
  6. Step 6: Final answer
    x = 5,153.41

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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.