Home / 1,812.30-2,730.53-1,639.16

Finding the Fourth Proportional to 1,812.30, 2,730.53 and 1,639.16

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Solution

The fourth proportional to 1,812.30, 2,730.53 and 1,639.16 is: 2,469.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,812.30 : 2,730.53 = 1,639.16 : x
  2. Step 2: Convert to fraction form
    1,812.30/2,730.53 = 1,639.16/x
  3. Step 3: Cross multiply
    1,812.30x = 2,730.53 × 1,639.16
  4. Step 4: Simplify right side
    1,812.30x = 4,475,775.55
  5. Step 5: Solve for x
    x = 4,475,775.55/1,812.30
  6. Step 6: Final answer
    x = 2,469.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.