Home / 2,330.68-3,215.82-1,386.40

Finding the Fourth Proportional to 2,330.68, 3,215.82 and 1,386.40

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Solution

The fourth proportional to 2,330.68, 3,215.82 and 1,386.40 is: 1,912.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,330.68 : 3,215.82 = 1,386.40 : x
  2. Step 2: Convert to fraction form
    2,330.68/3,215.82 = 1,386.40/x
  3. Step 3: Cross multiply
    2,330.68x = 3,215.82 × 1,386.40
  4. Step 4: Simplify right side
    2,330.68x = 4,458,412.85
  5. Step 5: Solve for x
    x = 4,458,412.85/2,330.68
  6. Step 6: Final answer
    x = 1,912.92

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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.