Home / 2,886.40-3,984.56-1,691.23

Finding the Fourth Proportional to 2,886.40, 3,984.56 and 1,691.23

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Solution

The fourth proportional to 2,886.40, 3,984.56 and 1,691.23 is: 2,334.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,886.40 : 3,984.56 = 1,691.23 : x
  2. Step 2: Convert to fraction form
    2,886.40/3,984.56 = 1,691.23/x
  3. Step 3: Cross multiply
    2,886.40x = 3,984.56 × 1,691.23
  4. Step 4: Simplify right side
    2,886.40x = 6,738,787.49
  5. Step 5: Solve for x
    x = 6,738,787.49/2,886.40
  6. Step 6: Final answer
    x = 2,334.67

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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.