Home / 4,143.48-6,213.07-1,221.40

Finding the Fourth Proportional to 4,143.48, 6,213.07 and 1,221.40

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Solution

The fourth proportional to 4,143.48, 6,213.07 and 1,221.40 is: 1,831.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,143.48 : 6,213.07 = 1,221.40 : x
  2. Step 2: Convert to fraction form
    4,143.48/6,213.07 = 1,221.40/x
  3. Step 3: Cross multiply
    4,143.48x = 6,213.07 × 1,221.40
  4. Step 4: Simplify right side
    4,143.48x = 7,588,643.70
  5. Step 5: Solve for x
    x = 7,588,643.70/4,143.48
  6. Step 6: Final answer
    x = 1,831.47

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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.