Home / 3,887,998.40-5,831,997.60-2,187,387.20

Finding the Fourth Proportional to 3,887,998.40, 5,831,997.60 and 2,187,387.20

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Solution

The fourth proportional to 3,887,998.40, 5,831,997.60 and 2,187,387.20 is: 3,281,080.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,887,998.40 : 5,831,997.60 = 2,187,387.20 : x
  2. Step 2: Convert to fraction form
    3,887,998.40/5,831,997.60 = 2,187,387.20/x
  3. Step 3: Cross multiply
    3,887,998.40x = 5,831,997.60 × 2,187,387.20
  4. Step 4: Simplify right side
    3,887,998.40x = 12,756,836,900,670.72
  5. Step 5: Solve for x
    x = 12,756,836,900,670.72/3,887,998.40
  6. Step 6: Final answer
    x = 3,281,080.80

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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.