Home / 3,745.90-5,618.87-1,113.45

Finding the Fourth Proportional to 3,745.90, 5,618.87 and 1,113.45

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Solution

The fourth proportional to 3,745.90, 5,618.87 and 1,113.45 is: 1,670.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,745.90 : 5,618.87 = 1,113.45 : x
  2. Step 2: Convert to fraction form
    3,745.90/5,618.87 = 1,113.45/x
  3. Step 3: Cross multiply
    3,745.90x = 5,618.87 × 1,113.45
  4. Step 4: Simplify right side
    3,745.90x = 6,256,308.34
  5. Step 5: Solve for x
    x = 6,256,308.34/3,745.90
  6. Step 6: Final answer
    x = 1,670.18

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1.5x scale

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.