Home / 1,175.42-1,619.02-1,087.84

Finding the Fourth Proportional to 1,175.42, 1,619.02 and 1,087.84

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Solution

The fourth proportional to 1,175.42, 1,619.02 and 1,087.84 is: 1,498.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,175.42 : 1,619.02 = 1,087.84 : x
  2. Step 2: Convert to fraction form
    1,175.42/1,619.02 = 1,087.84/x
  3. Step 3: Cross multiply
    1,175.42x = 1,619.02 × 1,087.84
  4. Step 4: Simplify right side
    1,175.42x = 1,761,234.72
  5. Step 5: Solve for x
    x = 1,761,234.72/1,175.42
  6. Step 6: Final answer
    x = 1,498.39

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1.5x scale

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.