Home / 1,938.29-2,904.78-1,011.95

Finding the Fourth Proportional to 1,938.29, 2,904.78 and 1,011.95

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Solution

The fourth proportional to 1,938.29, 2,904.78 and 1,011.95 is: 1,516.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,938.29 : 2,904.78 = 1,011.95 : x
  2. Step 2: Convert to fraction form
    1,938.29/2,904.78 = 1,011.95/x
  3. Step 3: Cross multiply
    1,938.29x = 2,904.78 × 1,011.95
  4. Step 4: Simplify right side
    1,938.29x = 2,939,477.60
  5. Step 5: Solve for x
    x = 2,939,477.60/1,938.29
  6. Step 6: Final answer
    x = 1,516.54

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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.