Home / 1,563.72-2,342.80-1,394.20

Finding the Fourth Proportional to 1,563.72, 2,342.80 and 1,394.20

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Solution

The fourth proportional to 1,563.72, 2,342.80 and 1,394.20 is: 2,088.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,563.72 : 2,342.80 = 1,394.20 : x
  2. Step 2: Convert to fraction form
    1,563.72/2,342.80 = 1,394.20/x
  3. Step 3: Cross multiply
    1,563.72x = 2,342.80 × 1,394.20
  4. Step 4: Simplify right side
    1,563.72x = 3,266,331.76
  5. Step 5: Solve for x
    x = 3,266,331.76/1,563.72
  6. Step 6: Final answer
    x = 2,088.82

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.