Home / 3,148.07-4,345.11-1,821.57

Finding the Fourth Proportional to 3,148.07, 4,345.11 and 1,821.57

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Solution

The fourth proportional to 3,148.07, 4,345.11 and 1,821.57 is: 2,514.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,148.07 : 4,345.11 = 1,821.57 : x
  2. Step 2: Convert to fraction form
    3,148.07/4,345.11 = 1,821.57/x
  3. Step 3: Cross multiply
    3,148.07x = 4,345.11 × 1,821.57
  4. Step 4: Simplify right side
    3,148.07x = 7,914,922.02
  5. Step 5: Solve for x
    x = 7,914,922.02/3,148.07
  6. Step 6: Final answer
    x = 2,514.22

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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.