Home / 1,433.50-1,977.21-1,007.44

Finding the Fourth Proportional to 1,433.50, 1,977.21 and 1,007.44

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Solution

The fourth proportional to 1,433.50, 1,977.21 and 1,007.44 is: 1,389.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,433.50 : 1,977.21 = 1,007.44 : x
  2. Step 2: Convert to fraction form
    1,433.50/1,977.21 = 1,007.44/x
  3. Step 3: Cross multiply
    1,433.50x = 1,977.21 × 1,007.44
  4. Step 4: Simplify right side
    1,433.50x = 1,991,915.50
  5. Step 5: Solve for x
    x = 1,991,915.50/1,433.50
  6. Step 6: Final answer
    x = 1,389.55

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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.