Home / 1,913.90-2,866.32-1,255.37

Finding the Fourth Proportional to 1,913.90, 2,866.32 and 1,255.37

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Solution

The fourth proportional to 1,913.90, 2,866.32 and 1,255.37 is: 1,880.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,913.90 : 2,866.32 = 1,255.37 : x
  2. Step 2: Convert to fraction form
    1,913.90/2,866.32 = 1,255.37/x
  3. Step 3: Cross multiply
    1,913.90x = 2,866.32 × 1,255.37
  4. Step 4: Simplify right side
    1,913.90x = 3,598,277.81
  5. Step 5: Solve for x
    x = 3,598,277.81/1,913.90
  6. Step 6: Final answer
    x = 1,880.08

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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.