Home / 1,628.90-2,247.32-1,031.23

Finding the Fourth Proportional to 1,628.90, 2,247.32 and 1,031.23

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Solution

The fourth proportional to 1,628.90, 2,247.32 and 1,031.23 is: 1,422.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,628.90 : 2,247.32 = 1,031.23 : x
  2. Step 2: Convert to fraction form
    1,628.90/2,247.32 = 1,031.23/x
  3. Step 3: Cross multiply
    1,628.90x = 2,247.32 × 1,031.23
  4. Step 4: Simplify right side
    1,628.90x = 2,317,509.19
  5. Step 5: Solve for x
    x = 2,317,509.19/1,628.90
  6. Step 6: Final answer
    x = 1,422.75

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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.