Home / 1,358.28-2,037.80-384.38

Finding the Fourth Proportional to 1,358.28, 2,037.80 and 384.38

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Solution

The fourth proportional to 1,358.28, 2,037.80 and 384.38 is: 576.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,358.28 : 2,037.80 = 384.38 : x
  2. Step 2: Convert to fraction form
    1,358.28/2,037.80 = 384.38/x
  3. Step 3: Cross multiply
    1,358.28x = 2,037.80 × 384.38
  4. Step 4: Simplify right side
    1,358.28x = 783,289.56
  5. Step 5: Solve for x
    x = 783,289.56/1,358.28
  6. Step 6: Final answer
    x = 576.68

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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.