Home / 4,143.69-6,215.81-1,221.75

Finding the Fourth Proportional to 4,143.69, 6,215.81 and 1,221.75

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Solution

The fourth proportional to 4,143.69, 6,215.81 and 1,221.75 is: 1,832.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,143.69 : 6,215.81 = 1,221.75 : x
  2. Step 2: Convert to fraction form
    4,143.69/6,215.81 = 1,221.75/x
  3. Step 3: Cross multiply
    4,143.69x = 6,215.81 × 1,221.75
  4. Step 4: Simplify right side
    4,143.69x = 7,594,159.76
  5. Step 5: Solve for x
    x = 7,594,159.76/4,143.69
  6. Step 6: Final answer
    x = 1,832.70

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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.