Home / 1,228.39-1,842.58-1,011.51

Finding the Fourth Proportional to 1,228.39, 1,842.58 and 1,011.51

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Solution

The fourth proportional to 1,228.39, 1,842.58 and 1,011.51 is: 1,517.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,228.39 : 1,842.58 = 1,011.51 : x
  2. Step 2: Convert to fraction form
    1,228.39/1,842.58 = 1,011.51/x
  3. Step 3: Cross multiply
    1,228.39x = 1,842.58 × 1,011.51
  4. Step 4: Simplify right side
    1,228.39x = 1,863,788.10
  5. Step 5: Solve for x
    x = 1,863,788.10/1,228.39
  6. Step 6: Final answer
    x = 1,517.26

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1.5x scale

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.