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Finding the Fourth Proportional to 2,856.07, 4,283.19 and 907.81

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Solution

The fourth proportional to 2,856.07, 4,283.19 and 907.81 is: 1,361.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,856.07 : 4,283.19 = 907.81 : x
  2. Step 2: Convert to fraction form
    2,856.07/4,283.19 = 907.81/x
  3. Step 3: Cross multiply
    2,856.07x = 4,283.19 × 907.81
  4. Step 4: Simplify right side
    2,856.07x = 3,888,322.71
  5. Step 5: Solve for x
    x = 3,888,322.71/2,856.07
  6. Step 6: Final answer
    x = 1,361.42

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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.