Home / 1,225.89-1,828.49-1,028.58

Finding the Fourth Proportional to 1,225.89, 1,828.49 and 1,028.58

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Solution

The fourth proportional to 1,225.89, 1,828.49 and 1,028.58 is: 1,534.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,225.89 : 1,828.49 = 1,028.58 : x
  2. Step 2: Convert to fraction form
    1,225.89/1,828.49 = 1,028.58/x
  3. Step 3: Cross multiply
    1,225.89x = 1,828.49 × 1,028.58
  4. Step 4: Simplify right side
    1,225.89x = 1,880,743.10
  5. Step 5: Solve for x
    x = 1,880,743.10/1,225.89
  6. Step 6: Final answer
    x = 1,534.19

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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.