Home / 3,690.90-5,535.81-1,225.67

Finding the Fourth Proportional to 3,690.90, 5,535.81 and 1,225.67

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Solution

The fourth proportional to 3,690.90, 5,535.81 and 1,225.67 is: 1,838.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,690.90 : 5,535.81 = 1,225.67 : x
  2. Step 2: Convert to fraction form
    3,690.90/5,535.81 = 1,225.67/x
  3. Step 3: Cross multiply
    3,690.90x = 5,535.81 × 1,225.67
  4. Step 4: Simplify right side
    3,690.90x = 6,785,048.56
  5. Step 5: Solve for x
    x = 6,785,048.56/3,690.90
  6. Step 6: Final answer
    x = 1,838.32

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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.