Home / 3,156.21-4,355.35-1,897.31

Finding the Fourth Proportional to 3,156.21, 4,355.35 and 1,897.31

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Solution

The fourth proportional to 3,156.21, 4,355.35 and 1,897.31 is: 2,618.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,156.21 : 4,355.35 = 1,897.31 : x
  2. Step 2: Convert to fraction form
    3,156.21/4,355.35 = 1,897.31/x
  3. Step 3: Cross multiply
    3,156.21x = 4,355.35 × 1,897.31
  4. Step 4: Simplify right side
    3,156.21x = 8,263,455.25
  5. Step 5: Solve for x
    x = 8,263,455.25/3,156.21
  6. Step 6: Final answer
    x = 2,618.16

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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.