Home / 1,313.88-1,971.10-448.12

Finding the Fourth Proportional to 1,313.88, 1,971.10 and 448.12

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Solution

The fourth proportional to 1,313.88, 1,971.10 and 448.12 is: 672.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,313.88 : 1,971.10 = 448.12 : x
  2. Step 2: Convert to fraction form
    1,313.88/1,971.10 = 448.12/x
  3. Step 3: Cross multiply
    1,313.88x = 1,971.10 × 448.12
  4. Step 4: Simplify right side
    1,313.88x = 883,289.33
  5. Step 5: Solve for x
    x = 883,289.33/1,313.88
  6. Step 6: Final answer
    x = 672.28

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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.