Home / 2,386.79-3,294.08-1,392.38

Finding the Fourth Proportional to 2,386.79, 3,294.08 and 1,392.38

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Solution

The fourth proportional to 2,386.79, 3,294.08 and 1,392.38 is: 1,921.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,386.79 : 3,294.08 = 1,392.38 : x
  2. Step 2: Convert to fraction form
    2,386.79/3,294.08 = 1,392.38/x
  3. Step 3: Cross multiply
    2,386.79x = 3,294.08 × 1,392.38
  4. Step 4: Simplify right side
    2,386.79x = 4,586,587.68
  5. Step 5: Solve for x
    x = 4,586,587.68/2,386.79
  6. Step 6: Final answer
    x = 1,921.66

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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.