Home / 3,123.35-4,309.47-1,943.58

Finding the Fourth Proportional to 3,123.35, 4,309.47 and 1,943.58

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Solution

The fourth proportional to 3,123.35, 4,309.47 and 1,943.58 is: 2,681.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,123.35 : 4,309.47 = 1,943.58 : x
  2. Step 2: Convert to fraction form
    3,123.35/4,309.47 = 1,943.58/x
  3. Step 3: Cross multiply
    3,123.35x = 4,309.47 × 1,943.58
  4. Step 4: Simplify right side
    3,123.35x = 8,375,799.70
  5. Step 5: Solve for x
    x = 8,375,799.70/3,123.35
  6. Step 6: Final answer
    x = 2,681.67

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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.