Home / 1,175.42-1,621.76-1,087.03

Finding the Fourth Proportional to 1,175.42, 1,621.76 and 1,087.03

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Solution

The fourth proportional to 1,175.42, 1,621.76 and 1,087.03 is: 1,499.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,175.42 : 1,621.76 = 1,087.03 : x
  2. Step 2: Convert to fraction form
    1,175.42/1,621.76 = 1,087.03/x
  3. Step 3: Cross multiply
    1,175.42x = 1,621.76 × 1,087.03
  4. Step 4: Simplify right side
    1,175.42x = 1,762,898.36
  5. Step 5: Solve for x
    x = 1,762,898.36/1,175.42
  6. Step 6: Final answer
    x = 1,499.80

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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.