Home / 4,918.92-7,378.17-1,221.07

Finding the Fourth Proportional to 4,918.92, 7,378.17 and 1,221.07

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Solution

The fourth proportional to 4,918.92, 7,378.17 and 1,221.07 is: 1,831.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,918.92 : 7,378.17 = 1,221.07 : x
  2. Step 2: Convert to fraction form
    4,918.92/7,378.17 = 1,221.07/x
  3. Step 3: Cross multiply
    4,918.92x = 7,378.17 × 1,221.07
  4. Step 4: Simplify right side
    4,918.92x = 9,009,225.15
  5. Step 5: Solve for x
    x = 9,009,225.15/4,918.92
  6. Step 6: Final answer
    x = 1,831.55

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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.