Home / 1,553.61-2,326.77-1,115.40

Finding the Fourth Proportional to 1,553.61, 2,326.77 and 1,115.40

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Solution

The fourth proportional to 1,553.61, 2,326.77 and 1,115.40 is: 1,670.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,553.61 : 2,326.77 = 1,115.40 : x
  2. Step 2: Convert to fraction form
    1,553.61/2,326.77 = 1,115.40/x
  3. Step 3: Cross multiply
    1,553.61x = 2,326.77 × 1,115.40
  4. Step 4: Simplify right side
    1,553.61x = 2,595,279.26
  5. Step 5: Solve for x
    x = 2,595,279.26/1,553.61
  6. Step 6: Final answer
    x = 1,670.48

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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.