Home / 1,913.36-2,640.47-1,127.41

Finding the Fourth Proportional to 1,913.36, 2,640.47 and 1,127.41

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Solution

The fourth proportional to 1,913.36, 2,640.47 and 1,127.41 is: 1,555.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,913.36 : 2,640.47 = 1,127.41 : x
  2. Step 2: Convert to fraction form
    1,913.36/2,640.47 = 1,127.41/x
  3. Step 3: Cross multiply
    1,913.36x = 2,640.47 × 1,127.41
  4. Step 4: Simplify right side
    1,913.36x = 2,976,880.04
  5. Step 5: Solve for x
    x = 2,976,880.04/1,913.36
  6. Step 6: Final answer
    x = 1,555.84

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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.