Home / 1,522.10-2,283.80-742.79

Finding the Fourth Proportional to 1,522.10, 2,283.80 and 742.79

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Solution

The fourth proportional to 1,522.10, 2,283.80 and 742.79 is: 1,114.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,522.10 : 2,283.80 = 742.79 : x
  2. Step 2: Convert to fraction form
    1,522.10/2,283.80 = 742.79/x
  3. Step 3: Cross multiply
    1,522.10x = 2,283.80 × 742.79
  4. Step 4: Simplify right side
    1,522.10x = 1,696,383.80
  5. Step 5: Solve for x
    x = 1,696,383.80/1,522.10
  6. Step 6: Final answer
    x = 1,114.50

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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.