Home / 2,021.64-2,789.84-1,137.45

Finding the Fourth Proportional to 2,021.64, 2,789.84 and 1,137.45

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Solution

The fourth proportional to 2,021.64, 2,789.84 and 1,137.45 is: 1,569.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,021.64 : 2,789.84 = 1,137.45 : x
  2. Step 2: Convert to fraction form
    2,021.64/2,789.84 = 1,137.45/x
  3. Step 3: Cross multiply
    2,021.64x = 2,789.84 × 1,137.45
  4. Step 4: Simplify right side
    2,021.64x = 3,173,303.51
  5. Step 5: Solve for x
    x = 3,173,303.51/2,021.64
  6. Step 6: Final answer
    x = 1,569.67

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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.