Home / 2,823.78-3,897.45-1,645.02

Finding the Fourth Proportional to 2,823.78, 3,897.45 and 1,645.02

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Solution

The fourth proportional to 2,823.78, 3,897.45 and 1,645.02 is: 2,270.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,823.78 : 3,897.45 = 1,645.02 : x
  2. Step 2: Convert to fraction form
    2,823.78/3,897.45 = 1,645.02/x
  3. Step 3: Cross multiply
    2,823.78x = 3,897.45 × 1,645.02
  4. Step 4: Simplify right side
    2,823.78x = 6,411,383.20
  5. Step 5: Solve for x
    x = 6,411,383.20/2,823.78
  6. Step 6: Final answer
    x = 2,270.50

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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.