Home / 3,181.48-4,772.20-1,538.18

Finding the Fourth Proportional to 3,181.48, 4,772.20 and 1,538.18

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Solution

The fourth proportional to 3,181.48, 4,772.20 and 1,538.18 is: 2,307.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,181.48 : 4,772.20 = 1,538.18 : x
  2. Step 2: Convert to fraction form
    3,181.48/4,772.20 = 1,538.18/x
  3. Step 3: Cross multiply
    3,181.48x = 4,772.20 × 1,538.18
  4. Step 4: Simplify right side
    3,181.48x = 7,340,502.60
  5. Step 5: Solve for x
    x = 7,340,502.60/3,181.48
  6. Step 6: Final answer
    x = 2,307.26

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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.