Home / 1,173.48-1,615.86-1,080.60

Finding the Fourth Proportional to 1,173.48, 1,615.86 and 1,080.60

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Solution

The fourth proportional to 1,173.48, 1,615.86 and 1,080.60 is: 1,487.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,173.48 : 1,615.86 = 1,080.60 : x
  2. Step 2: Convert to fraction form
    1,173.48/1,615.86 = 1,080.60/x
  3. Step 3: Cross multiply
    1,173.48x = 1,615.86 × 1,080.60
  4. Step 4: Simplify right side
    1,173.48x = 1,746,098.32
  5. Step 5: Solve for x
    x = 1,746,098.32/1,173.48
  6. Step 6: Final answer
    x = 1,487.97

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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.