Home / 5,105.12-7,047.74-3,435.30

Finding the Fourth Proportional to 5,105.12, 7,047.74 and 3,435.30

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Solution

The fourth proportional to 5,105.12, 7,047.74 and 3,435.30 is: 4,742.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,105.12 : 7,047.74 = 3,435.30 : x
  2. Step 2: Convert to fraction form
    5,105.12/7,047.74 = 3,435.30/x
  3. Step 3: Cross multiply
    5,105.12x = 7,047.74 × 3,435.30
  4. Step 4: Simplify right side
    5,105.12x = 24,211,109.81
  5. Step 5: Solve for x
    x = 24,211,109.81/5,105.12
  6. Step 6: Final answer
    x = 4,742.52

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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.