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Finding the Fourth Proportional to 3,869,201.70, 5,803,802.55 and 1,956,014.10

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Solution

The fourth proportional to 3,869,201.70, 5,803,802.55 and 1,956,014.10 is: 2,934,021.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,869,201.70 : 5,803,802.55 = 1,956,014.10 : x
  2. Step 2: Convert to fraction form
    3,869,201.70/5,803,802.55 = 1,956,014.10/x
  3. Step 3: Cross multiply
    3,869,201.70x = 5,803,802.55 × 1,956,014.10
  4. Step 4: Simplify right side
    3,869,201.70x = 11,352,319,621,415.96
  5. Step 5: Solve for x
    x = 11,352,319,621,415.96/3,869,201.70
  6. Step 6: Final answer
    x = 2,934,021.15

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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.