Home / 1,319.29-1,819.55-1,177.63

Finding the Fourth Proportional to 1,319.29, 1,819.55 and 1,177.63

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Solution

The fourth proportional to 1,319.29, 1,819.55 and 1,177.63 is: 1,624.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,319.29 : 1,819.55 = 1,177.63 : x
  2. Step 2: Convert to fraction form
    1,319.29/1,819.55 = 1,177.63/x
  3. Step 3: Cross multiply
    1,319.29x = 1,819.55 × 1,177.63
  4. Step 4: Simplify right side
    1,319.29x = 2,142,755.06
  5. Step 5: Solve for x
    x = 2,142,755.06/1,319.29
  6. Step 6: Final answer
    x = 1,624.18

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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.