Home / 2,838.64-4,258.56-1,107.40

Finding the Fourth Proportional to 2,838.64, 4,258.56 and 1,107.40

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Solution

The fourth proportional to 2,838.64, 4,258.56 and 1,107.40 is: 1,661.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,838.64 : 4,258.56 = 1,107.40 : x
  2. Step 2: Convert to fraction form
    2,838.64/4,258.56 = 1,107.40/x
  3. Step 3: Cross multiply
    2,838.64x = 4,258.56 × 1,107.40
  4. Step 4: Simplify right side
    2,838.64x = 4,715,929.34
  5. Step 5: Solve for x
    x = 4,715,929.34/2,838.64
  6. Step 6: Final answer
    x = 1,661.33

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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.