Home / 1,946.04-2,921.90-1,213.40

Finding the Fourth Proportional to 1,946.04, 2,921.90 and 1,213.40

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Solution

The fourth proportional to 1,946.04, 2,921.90 and 1,213.40 is: 1,821.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,946.04 : 2,921.90 = 1,213.40 : x
  2. Step 2: Convert to fraction form
    1,946.04/2,921.90 = 1,213.40/x
  3. Step 3: Cross multiply
    1,946.04x = 2,921.90 × 1,213.40
  4. Step 4: Simplify right side
    1,946.04x = 3,545,412.78
  5. Step 5: Solve for x
    x = 3,545,412.78/1,946.04
  6. Step 6: Final answer
    x = 1,821.86

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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.