Home / 5,185.34-7,778.04-1,289.75

Finding the Fourth Proportional to 5,185.34, 7,778.04 and 1,289.75

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Solution

The fourth proportional to 5,185.34, 7,778.04 and 1,289.75 is: 1,934.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,185.34 : 7,778.04 = 1,289.75 : x
  2. Step 2: Convert to fraction form
    5,185.34/7,778.04 = 1,289.75/x
  3. Step 3: Cross multiply
    5,185.34x = 7,778.04 × 1,289.75
  4. Step 4: Simplify right side
    5,185.34x = 10,031,681.75
  5. Step 5: Solve for x
    x = 10,031,681.75/5,185.34
  6. Step 6: Final answer
    x = 1,934.62

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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.