Home / 5,187.13-7,780.69-1,724.38

Finding the Fourth Proportional to 5,187.13, 7,780.69 and 1,724.38

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Solution

The fourth proportional to 5,187.13, 7,780.69 and 1,724.38 is: 2,586.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,187.13 : 7,780.69 = 1,724.38 : x
  2. Step 2: Convert to fraction form
    5,187.13/7,780.69 = 1,724.38/x
  3. Step 3: Cross multiply
    5,187.13x = 7,780.69 × 1,724.38
  4. Step 4: Simplify right side
    5,187.13x = 13,416,866.22
  5. Step 5: Solve for x
    x = 13,416,866.22/5,187.13
  6. Step 6: Final answer
    x = 2,586.57

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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.