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Finding the Fourth Proportional to 7,696.40, 10,620.99 and 4,159.58

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Solution

The fourth proportional to 7,696.40, 10,620.99 and 4,159.58 is: 5,740.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,696.40 : 10,620.99 = 4,159.58 : x
  2. Step 2: Convert to fraction form
    7,696.40/10,620.99 = 4,159.58/x
  3. Step 3: Cross multiply
    7,696.40x = 10,620.99 × 4,159.58
  4. Step 4: Simplify right side
    7,696.40x = 44,178,804.48
  5. Step 5: Solve for x
    x = 44,178,804.48/7,696.40
  6. Step 6: Final answer
    x = 5,740.19

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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.