Home / 3,181.13-4,389.96-1,783.88

Finding the Fourth Proportional to 3,181.13, 4,389.96 and 1,783.88

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Solution

The fourth proportional to 3,181.13, 4,389.96 and 1,783.88 is: 2,461.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,181.13 : 4,389.96 = 1,783.88 : x
  2. Step 2: Convert to fraction form
    3,181.13/4,389.96 = 1,783.88/x
  3. Step 3: Cross multiply
    3,181.13x = 4,389.96 × 1,783.88
  4. Step 4: Simplify right side
    3,181.13x = 7,831,130.98
  5. Step 5: Solve for x
    x = 7,831,130.98/3,181.13
  6. Step 6: Final answer
    x = 2,461.75

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1.5x scale

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.