Home / 1,537.39-2,121.09-907.70

Finding the Fourth Proportional to 1,537.39, 2,121.09 and 907.70

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Solution

The fourth proportional to 1,537.39, 2,121.09 and 907.70 is: 1,252.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,537.39 : 2,121.09 = 907.70 : x
  2. Step 2: Convert to fraction form
    1,537.39/2,121.09 = 907.70/x
  3. Step 3: Cross multiply
    1,537.39x = 2,121.09 × 907.70
  4. Step 4: Simplify right side
    1,537.39x = 1,925,313.39
  5. Step 5: Solve for x
    x = 1,925,313.39/1,537.39
  6. Step 6: Final answer
    x = 1,252.33

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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.