Home / 1,822.40-2,748.08-1,620.80

Finding the Fourth Proportional to 1,822.40, 2,748.08 and 1,620.80

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Solution

The fourth proportional to 1,822.40, 2,748.08 and 1,620.80 is: 2,444.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,822.40 : 2,748.08 = 1,620.80 : x
  2. Step 2: Convert to fraction form
    1,822.40/2,748.08 = 1,620.80/x
  3. Step 3: Cross multiply
    1,822.40x = 2,748.08 × 1,620.80
  4. Step 4: Simplify right side
    1,822.40x = 4,454,088.06
  5. Step 5: Solve for x
    x = 4,454,088.06/1,822.40
  6. Step 6: Final answer
    x = 2,444.08

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.