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Finding the Fourth Proportional to 3,888.54, 5,368.14 and 2,636.19

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Solution

The fourth proportional to 3,888.54, 5,368.14 and 2,636.19 is: 3,639.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,888.54 : 5,368.14 = 2,636.19 : x
  2. Step 2: Convert to fraction form
    3,888.54/5,368.14 = 2,636.19/x
  3. Step 3: Cross multiply
    3,888.54x = 5,368.14 × 2,636.19
  4. Step 4: Simplify right side
    3,888.54x = 14,151,436.99
  5. Step 5: Solve for x
    x = 14,151,436.99/3,888.54
  6. Step 6: Final answer
    x = 3,639.27

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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.