Home / 2,123.40-2,930.22-1,239.26

Finding the Fourth Proportional to 2,123.40, 2,930.22 and 1,239.26

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Solution

The fourth proportional to 2,123.40, 2,930.22 and 1,239.26 is: 1,710.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,123.40 : 2,930.22 = 1,239.26 : x
  2. Step 2: Convert to fraction form
    2,123.40/2,930.22 = 1,239.26/x
  3. Step 3: Cross multiply
    2,123.40x = 2,930.22 × 1,239.26
  4. Step 4: Simplify right side
    2,123.40x = 3,631,304.44
  5. Step 5: Solve for x
    x = 3,631,304.44/2,123.40
  6. Step 6: Final answer
    x = 1,710.14

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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.