Home / 5,123.70-7,685.15-1,836.45

Finding the Fourth Proportional to 5,123.70, 7,685.15 and 1,836.45

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Solution

The fourth proportional to 5,123.70, 7,685.15 and 1,836.45 is: 2,754.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,123.70 : 7,685.15 = 1,836.45 : x
  2. Step 2: Convert to fraction form
    5,123.70/7,685.15 = 1,836.45/x
  3. Step 3: Cross multiply
    5,123.70x = 7,685.15 × 1,836.45
  4. Step 4: Simplify right side
    5,123.70x = 14,113,384.54
  5. Step 5: Solve for x
    x = 14,113,384.54/5,123.70
  6. Step 6: Final answer
    x = 2,754.53

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.