Home / 2,386.39-3,293.21-1,391.47

Finding the Fourth Proportional to 2,386.39, 3,293.21 and 1,391.47

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Solution

The fourth proportional to 2,386.39, 3,293.21 and 1,391.47 is: 1,920.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,386.39 : 3,293.21 = 1,391.47 : x
  2. Step 2: Convert to fraction form
    2,386.39/3,293.21 = 1,391.47/x
  3. Step 3: Cross multiply
    2,386.39x = 3,293.21 × 1,391.47
  4. Step 4: Simplify right side
    2,386.39x = 4,582,402.92
  5. Step 5: Solve for x
    x = 4,582,402.92/2,386.39
  6. Step 6: Final answer
    x = 1,920.22

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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.