Home / 1,518.45-2,276.11-697.31

Finding the Fourth Proportional to 1,518.45, 2,276.11 and 697.31

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Solution

The fourth proportional to 1,518.45, 2,276.11 and 697.31 is: 1,045.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,518.45 : 2,276.11 = 697.31 : x
  2. Step 2: Convert to fraction form
    1,518.45/2,276.11 = 697.31/x
  3. Step 3: Cross multiply
    1,518.45x = 2,276.11 × 697.31
  4. Step 4: Simplify right side
    1,518.45x = 1,587,154.26
  5. Step 5: Solve for x
    x = 1,587,154.26/1,518.45
  6. Step 6: Final answer
    x = 1,045.25

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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.