Home / 2,812.03-4,219.65-1,145.80

Finding the Fourth Proportional to 2,812.03, 4,219.65 and 1,145.80

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Solution

The fourth proportional to 2,812.03, 4,219.65 and 1,145.80 is: 1,719.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,812.03 : 4,219.65 = 1,145.80 : x
  2. Step 2: Convert to fraction form
    2,812.03/4,219.65 = 1,145.80/x
  3. Step 3: Cross multiply
    2,812.03x = 4,219.65 × 1,145.80
  4. Step 4: Simplify right side
    2,812.03x = 4,834,874.97
  5. Step 5: Solve for x
    x = 4,834,874.97/2,812.03
  6. Step 6: Final answer
    x = 1,719.35

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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.