Home / 1,181.10-1,626.62-1,155.60

Finding the Fourth Proportional to 1,181.10, 1,626.62 and 1,155.60

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Solution

The fourth proportional to 1,181.10, 1,626.62 and 1,155.60 is: 1,591.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,181.10 : 1,626.62 = 1,155.60 : x
  2. Step 2: Convert to fraction form
    1,181.10/1,626.62 = 1,155.60/x
  3. Step 3: Cross multiply
    1,181.10x = 1,626.62 × 1,155.60
  4. Step 4: Simplify right side
    1,181.10x = 1,879,722.07
  5. Step 5: Solve for x
    x = 1,879,722.07/1,181.10
  6. Step 6: Final answer
    x = 1,591.50

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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.