Home / 1,901.86-2,623.70-1,115.58

Finding the Fourth Proportional to 1,901.86, 2,623.70 and 1,115.58

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Solution

The fourth proportional to 1,901.86, 2,623.70 and 1,115.58 is: 1,538.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,901.86 : 2,623.70 = 1,115.58 : x
  2. Step 2: Convert to fraction form
    1,901.86/2,623.70 = 1,115.58/x
  3. Step 3: Cross multiply
    1,901.86x = 2,623.70 × 1,115.58
  4. Step 4: Simplify right side
    1,901.86x = 2,926,947.25
  5. Step 5: Solve for x
    x = 2,926,947.25/1,901.86
  6. Step 6: Final answer
    x = 1,538.99

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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.