Home / 2,021.32-2,789.40-1,137.13

Finding the Fourth Proportional to 2,021.32, 2,789.40 and 1,137.13

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Solution

The fourth proportional to 2,021.32, 2,789.40 and 1,137.13 is: 1,569.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,021.32 : 2,789.40 = 1,137.13 : x
  2. Step 2: Convert to fraction form
    2,021.32/2,789.40 = 1,137.13/x
  3. Step 3: Cross multiply
    2,021.32x = 2,789.40 × 1,137.13
  4. Step 4: Simplify right side
    2,021.32x = 3,171,907.71
  5. Step 5: Solve for x
    x = 3,171,907.71/2,021.32
  6. Step 6: Final answer
    x = 1,569.22

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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.