Home / 3,070.76-4,605.46-1,221.38

Finding the Fourth Proportional to 3,070.76, 4,605.46 and 1,221.38

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Solution

The fourth proportional to 3,070.76, 4,605.46 and 1,221.38 is: 1,831.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,070.76 : 4,605.46 = 1,221.38 : x
  2. Step 2: Convert to fraction form
    3,070.76/4,605.46 = 1,221.38/x
  3. Step 3: Cross multiply
    3,070.76x = 4,605.46 × 1,221.38
  4. Step 4: Simplify right side
    3,070.76x = 5,625,007.92
  5. Step 5: Solve for x
    x = 5,625,007.92/3,070.76
  6. Step 6: Final answer
    x = 1,831.80

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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.