Home / 3,886.50-5,830.67-1,289.45

Finding the Fourth Proportional to 3,886.50, 5,830.67 and 1,289.45

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Solution

The fourth proportional to 3,886.50, 5,830.67 and 1,289.45 is: 1,934.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,886.50 : 5,830.67 = 1,289.45 : x
  2. Step 2: Convert to fraction form
    3,886.50/5,830.67 = 1,289.45/x
  3. Step 3: Cross multiply
    3,886.50x = 5,830.67 × 1,289.45
  4. Step 4: Simplify right side
    3,886.50x = 7,518,321.83
  5. Step 5: Solve for x
    x = 7,518,321.83/3,886.50
  6. Step 6: Final answer
    x = 1,934.47

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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.