Home / 2,735.80-4,103.70-1,812.40

Finding the Fourth Proportional to 2,735.80, 4,103.70 and 1,812.40

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Solution

The fourth proportional to 2,735.80, 4,103.70 and 1,812.40 is: 2,718.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,735.80 : 4,103.70 = 1,812.40 : x
  2. Step 2: Convert to fraction form
    2,735.80/4,103.70 = 1,812.40/x
  3. Step 3: Cross multiply
    2,735.80x = 4,103.70 × 1,812.40
  4. Step 4: Simplify right side
    2,735.80x = 7,437,545.88
  5. Step 5: Solve for x
    x = 7,437,545.88/2,735.80
  6. Step 6: Final answer
    x = 2,718.60

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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.