Home / 2,946.40-4,065.93-1,620.09

Finding the Fourth Proportional to 2,946.40, 4,065.93 and 1,620.09

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Solution

The fourth proportional to 2,946.40, 4,065.93 and 1,620.09 is: 2,235.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,946.40 : 4,065.93 = 1,620.09 : x
  2. Step 2: Convert to fraction form
    2,946.40/4,065.93 = 1,620.09/x
  3. Step 3: Cross multiply
    2,946.40x = 4,065.93 × 1,620.09
  4. Step 4: Simplify right side
    2,946.40x = 6,587,172.53
  5. Step 5: Solve for x
    x = 6,587,172.53/2,946.40
  6. Step 6: Final answer
    x = 2,235.67

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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.