Home / 2,021.48-2,789.64-1,137.48

Finding the Fourth Proportional to 2,021.48, 2,789.64 and 1,137.48

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Solution

The fourth proportional to 2,021.48, 2,789.64 and 1,137.48 is: 1,569.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,021.48 : 2,789.64 = 1,137.48 : x
  2. Step 2: Convert to fraction form
    2,021.48/2,789.64 = 1,137.48/x
  3. Step 3: Cross multiply
    2,021.48x = 2,789.64 × 1,137.48
  4. Step 4: Simplify right side
    2,021.48x = 3,173,159.71
  5. Step 5: Solve for x
    x = 3,173,159.71/2,021.48
  6. Step 6: Final answer
    x = 1,569.72

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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.