Home / 1,563.93-2,155.75-1,231.92

Finding the Fourth Proportional to 1,563.93, 2,155.75 and 1,231.92

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Solution

The fourth proportional to 1,563.93, 2,155.75 and 1,231.92 is: 1,698.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,563.93 : 2,155.75 = 1,231.92 : x
  2. Step 2: Convert to fraction form
    1,563.93/2,155.75 = 1,231.92/x
  3. Step 3: Cross multiply
    1,563.93x = 2,155.75 × 1,231.92
  4. Step 4: Simplify right side
    1,563.93x = 2,655,708.46
  5. Step 5: Solve for x
    x = 2,655,708.46/1,563.93
  6. Step 6: Final answer
    x = 1,698.10

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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.