Home / 1,347.20-2,004.48-1,321.28

Finding the Fourth Proportional to 1,347.20, 2,004.48 and 1,321.28

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Solution

The fourth proportional to 1,347.20, 2,004.48 and 1,321.28 is: 1,965.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,347.20 : 2,004.48 = 1,321.28 : x
  2. Step 2: Convert to fraction form
    1,347.20/2,004.48 = 1,321.28/x
  3. Step 3: Cross multiply
    1,347.20x = 2,004.48 × 1,321.28
  4. Step 4: Simplify right side
    1,347.20x = 2,648,479.33
  5. Step 5: Solve for x
    x = 2,648,479.33/1,347.20
  6. Step 6: Final answer
    x = 1,965.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.