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Finding the Fourth Proportional to 3,669,851.06, 5,064,797.13 and 2,100,128.57

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Solution

The fourth proportional to 3,669,851.06, 5,064,797.13 and 2,100,128.57 is: 2,898,407.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,669,851.06 : 5,064,797.13 = 2,100,128.57 : x
  2. Step 2: Convert to fraction form
    3,669,851.06/5,064,797.13 = 2,100,128.57/x
  3. Step 3: Cross multiply
    3,669,851.06x = 5,064,797.13 × 2,100,128.57
  4. Step 4: Simplify right side
    3,669,851.06x = 10,636,725,153,967.00
  5. Step 5: Solve for x
    x = 10,636,725,153,967.00/3,669,851.06
  6. Step 6: Final answer
    x = 2,898,407.86

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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.