Home / 1,087.19-1,619.55-1,019.96

Finding the Fourth Proportional to 1,087.19, 1,619.55 and 1,019.96

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Solution

The fourth proportional to 1,087.19, 1,619.55 and 1,019.96 is: 1,519.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,087.19 : 1,619.55 = 1,019.96 : x
  2. Step 2: Convert to fraction form
    1,087.19/1,619.55 = 1,019.96/x
  3. Step 3: Cross multiply
    1,087.19x = 1,619.55 × 1,019.96
  4. Step 4: Simplify right side
    1,087.19x = 1,651,868.12
  5. Step 5: Solve for x
    x = 1,651,868.12/1,087.19
  6. Step 6: Final answer
    x = 1,519.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.