Home / 1,985.09-2,736.59-1,563.75

Finding the Fourth Proportional to 1,985.09, 2,736.59 and 1,563.75

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Solution

The fourth proportional to 1,985.09, 2,736.59 and 1,563.75 is: 2,155.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,985.09 : 2,736.59 = 1,563.75 : x
  2. Step 2: Convert to fraction form
    1,985.09/2,736.59 = 1,563.75/x
  3. Step 3: Cross multiply
    1,985.09x = 2,736.59 × 1,563.75
  4. Step 4: Simplify right side
    1,985.09x = 4,279,334.79
  5. Step 5: Solve for x
    x = 4,279,334.79/1,985.09
  6. Step 6: Final answer
    x = 2,155.74

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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.