Home / 2,386.96-3,294.92-1,392.57

Finding the Fourth Proportional to 2,386.96, 3,294.92 and 1,392.57

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Solution

The fourth proportional to 2,386.96, 3,294.92 and 1,392.57 is: 1,922.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,386.96 : 3,294.92 = 1,392.57 : x
  2. Step 2: Convert to fraction form
    2,386.96/3,294.92 = 1,392.57/x
  3. Step 3: Cross multiply
    2,386.96x = 3,294.92 × 1,392.57
  4. Step 4: Simplify right side
    2,386.96x = 4,588,410.23
  5. Step 5: Solve for x
    x = 4,588,410.23/2,386.96
  6. Step 6: Final answer
    x = 1,922.28

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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.