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Finding the Fourth Proportional to 3,688.94, 5,087.94 and 2,569.88

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Solution

The fourth proportional to 3,688.94, 5,087.94 and 2,569.88 is: 3,544.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,688.94 : 5,087.94 = 2,569.88 : x
  2. Step 2: Convert to fraction form
    3,688.94/5,087.94 = 2,569.88/x
  3. Step 3: Cross multiply
    3,688.94x = 5,087.94 × 2,569.88
  4. Step 4: Simplify right side
    3,688.94x = 13,075,395.25
  5. Step 5: Solve for x
    x = 13,075,395.25/3,688.94
  6. Step 6: Final answer
    x = 3,544.49

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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.