Home / 1,246.58-1,720.23-749.49

Finding the Fourth Proportional to 1,246.58, 1,720.23 and 749.49

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Solution

The fourth proportional to 1,246.58, 1,720.23 and 749.49 is: 1,034.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,246.58 : 1,720.23 = 749.49 : x
  2. Step 2: Convert to fraction form
    1,246.58/1,720.23 = 749.49/x
  3. Step 3: Cross multiply
    1,246.58x = 1,720.23 × 749.49
  4. Step 4: Simplify right side
    1,246.58x = 1,289,295.18
  5. Step 5: Solve for x
    x = 1,289,295.18/1,246.58
  6. Step 6: Final answer
    x = 1,034.27

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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.