Home / 5,185.44-7,780.30-1,854.14

Finding the Fourth Proportional to 5,185.44, 7,780.30 and 1,854.14

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Solution

The fourth proportional to 5,185.44, 7,780.30 and 1,854.14 is: 2,781.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,185.44 : 7,780.30 = 1,854.14 : x
  2. Step 2: Convert to fraction form
    5,185.44/7,780.30 = 1,854.14/x
  3. Step 3: Cross multiply
    5,185.44x = 7,780.30 × 1,854.14
  4. Step 4: Simplify right side
    5,185.44x = 14,425,780.26
  5. Step 5: Solve for x
    x = 14,425,780.26/5,185.44
  6. Step 6: Final answer
    x = 2,781.98

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1.5x scale

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.