Home / 1,563.71-2,155.82-1,512.68

Finding the Fourth Proportional to 1,563.71, 2,155.82 and 1,512.68

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Solution

The fourth proportional to 1,563.71, 2,155.82 and 1,512.68 is: 2,085.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,563.71 : 2,155.82 = 1,512.68 : x
  2. Step 2: Convert to fraction form
    1,563.71/2,155.82 = 1,512.68/x
  3. Step 3: Cross multiply
    1,563.71x = 2,155.82 × 1,512.68
  4. Step 4: Simplify right side
    1,563.71x = 3,261,047.46
  5. Step 5: Solve for x
    x = 3,261,047.46/1,563.71
  6. Step 6: Final answer
    x = 2,085.46

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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.