Home / 1,672.85-2,308.33-926.70

Finding the Fourth Proportional to 1,672.85, 2,308.33 and 926.70

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Solution

The fourth proportional to 1,672.85, 2,308.33 and 926.70 is: 1,278.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,672.85 : 2,308.33 = 926.70 : x
  2. Step 2: Convert to fraction form
    1,672.85/2,308.33 = 926.70/x
  3. Step 3: Cross multiply
    1,672.85x = 2,308.33 × 926.70
  4. Step 4: Simplify right side
    1,672.85x = 2,139,129.41
  5. Step 5: Solve for x
    x = 2,139,129.41/1,672.85
  6. Step 6: Final answer
    x = 1,278.73

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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.