Home / 1,729.76-2,393.55-1,582.20

Finding the Fourth Proportional to 1,729.76, 2,393.55 and 1,582.20

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Solution

The fourth proportional to 1,729.76, 2,393.55 and 1,582.20 is: 2,189.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,729.76 : 2,393.55 = 1,582.20 : x
  2. Step 2: Convert to fraction form
    1,729.76/2,393.55 = 1,582.20/x
  3. Step 3: Cross multiply
    1,729.76x = 2,393.55 × 1,582.20
  4. Step 4: Simplify right side
    1,729.76x = 3,787,074.81
  5. Step 5: Solve for x
    x = 3,787,074.81/1,729.76
  6. Step 6: Final answer
    x = 2,189.37

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1.5x scale

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.