Home / 8,742.18-13,124.71-5,190.79

Finding the Fourth Proportional to 8,742.18, 13,124.71 and 5,190.79

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Solution

The fourth proportional to 8,742.18, 13,124.71 and 5,190.79 is: 7,792.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,742.18 : 13,124.71 = 5,190.79 : x
  2. Step 2: Convert to fraction form
    8,742.18/13,124.71 = 5,190.79/x
  3. Step 3: Cross multiply
    8,742.18x = 13,124.71 × 5,190.79
  4. Step 4: Simplify right side
    8,742.18x = 68,127,567.63
  5. Step 5: Solve for x
    x = 68,127,567.63/8,742.18
  6. Step 6: Final answer
    x = 7,792.97

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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.