Home / 4,905.21-7,356.60-1,394.40

Finding the Fourth Proportional to 4,905.21, 7,356.60 and 1,394.40

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Solution

The fourth proportional to 4,905.21, 7,356.60 and 1,394.40 is: 2,091.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,905.21 : 7,356.60 = 1,394.40 : x
  2. Step 2: Convert to fraction form
    4,905.21/7,356.60 = 1,394.40/x
  3. Step 3: Cross multiply
    4,905.21x = 7,356.60 × 1,394.40
  4. Step 4: Simplify right side
    4,905.21x = 10,258,043.04
  5. Step 5: Solve for x
    x = 10,258,043.04/4,905.21
  6. Step 6: Final answer
    x = 2,091.25

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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.