Home / 3,783.18-5,675.50-1,317.90

Finding the Fourth Proportional to 3,783.18, 5,675.50 and 1,317.90

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Solution

The fourth proportional to 3,783.18, 5,675.50 and 1,317.90 is: 1,977.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,783.18 : 5,675.50 = 1,317.90 : x
  2. Step 2: Convert to fraction form
    3,783.18/5,675.50 = 1,317.90/x
  3. Step 3: Cross multiply
    3,783.18x = 5,675.50 × 1,317.90
  4. Step 4: Simplify right side
    3,783.18x = 7,479,741.45
  5. Step 5: Solve for x
    x = 7,479,741.45/3,783.18
  6. Step 6: Final answer
    x = 1,977.10

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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.