Home / 1,246.37-1,720.17-749.23

Finding the Fourth Proportional to 1,246.37, 1,720.17 and 749.23

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Solution

The fourth proportional to 1,246.37, 1,720.17 and 749.23 is: 1,034.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,246.37 : 1,720.17 = 749.23 : x
  2. Step 2: Convert to fraction form
    1,246.37/1,720.17 = 749.23/x
  3. Step 3: Cross multiply
    1,246.37x = 1,720.17 × 749.23
  4. Step 4: Simplify right side
    1,246.37x = 1,288,798.67
  5. Step 5: Solve for x
    x = 1,288,798.67/1,246.37
  6. Step 6: Final answer
    x = 1,034.05

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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.