Home / 2,990.28-4,126.60-1,664

Finding the Fourth Proportional to 2,990.28, 4,126.60 and 1,664

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Solution

The fourth proportional to 2,990.28, 4,126.60 and 1,664 is: 2,296.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,990.28 : 4,126.60 = 1,664 : x
  2. Step 2: Convert to fraction form
    2,990.28/4,126.60 = 1,664/x
  3. Step 3: Cross multiply
    2,990.28x = 4,126.60 × 1,664
  4. Step 4: Simplify right side
    2,990.28x = 6,866,662.40
  5. Step 5: Solve for x
    x = 6,866,662.40/2,990.28
  6. Step 6: Final answer
    x = 2,296.33

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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.