Home / 2,123.10-2,930.49-1,283.81

Finding the Fourth Proportional to 2,123.10, 2,930.49 and 1,283.81

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Solution

The fourth proportional to 2,123.10, 2,930.49 and 1,283.81 is: 1,772.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,123.10 : 2,930.49 = 1,283.81 : x
  2. Step 2: Convert to fraction form
    2,123.10/2,930.49 = 1,283.81/x
  3. Step 3: Cross multiply
    2,123.10x = 2,930.49 × 1,283.81
  4. Step 4: Simplify right side
    2,123.10x = 3,762,177.71
  5. Step 5: Solve for x
    x = 3,762,177.71/2,123.10
  6. Step 6: Final answer
    x = 1,772.02

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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.