Home / 2,020.40-2,780.56-1,709.75

Finding the Fourth Proportional to 2,020.40, 2,780.56 and 1,709.75

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Solution

The fourth proportional to 2,020.40, 2,780.56 and 1,709.75 is: 2,353.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,020.40 : 2,780.56 = 1,709.75 : x
  2. Step 2: Convert to fraction form
    2,020.40/2,780.56 = 1,709.75/x
  3. Step 3: Cross multiply
    2,020.40x = 2,780.56 × 1,709.75
  4. Step 4: Simplify right side
    2,020.40x = 4,754,062.46
  5. Step 5: Solve for x
    x = 4,754,062.46/2,020.40
  6. Step 6: Final answer
    x = 2,353.03

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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.