Home / 2,099.60-2,897.28-1,215.44

Finding the Fourth Proportional to 2,099.60, 2,897.28 and 1,215.44

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Solution

The fourth proportional to 2,099.60, 2,897.28 and 1,215.44 is: 1,677.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,099.60 : 2,897.28 = 1,215.44 : x
  2. Step 2: Convert to fraction form
    2,099.60/2,897.28 = 1,215.44/x
  3. Step 3: Cross multiply
    2,099.60x = 2,897.28 × 1,215.44
  4. Step 4: Simplify right side
    2,099.60x = 3,521,470.00
  5. Step 5: Solve for x
    x = 3,521,470.00/2,099.60
  6. Step 6: Final answer
    x = 1,677.21

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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.