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Finding the Fourth Proportional to 2,868.54, 4,303.40 and 1,388.81

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Solution

The fourth proportional to 2,868.54, 4,303.40 and 1,388.81 is: 2,083.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,868.54 : 4,303.40 = 1,388.81 : x
  2. Step 2: Convert to fraction form
    2,868.54/4,303.40 = 1,388.81/x
  3. Step 3: Cross multiply
    2,868.54x = 4,303.40 × 1,388.81
  4. Step 4: Simplify right side
    2,868.54x = 5,976,576.49
  5. Step 5: Solve for x
    x = 5,976,576.49/2,868.54
  6. Step 6: Final answer
    x = 2,083.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.