Home / 2,044.40-2,821.20-1,345.28

Finding the Fourth Proportional to 2,044.40, 2,821.20 and 1,345.28

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Solution

The fourth proportional to 2,044.40, 2,821.20 and 1,345.28 is: 1,856.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,044.40 : 2,821.20 = 1,345.28 : x
  2. Step 2: Convert to fraction form
    2,044.40/2,821.20 = 1,345.28/x
  3. Step 3: Cross multiply
    2,044.40x = 2,821.20 × 1,345.28
  4. Step 4: Simplify right side
    2,044.40x = 3,795,303.94
  5. Step 5: Solve for x
    x = 3,795,303.94/2,044.40
  6. Step 6: Final answer
    x = 1,856.44

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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.