Home / 8,391.63-11,580.55-4,615.21

Finding the Fourth Proportional to 8,391.63, 11,580.55 and 4,615.21

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Solution

The fourth proportional to 8,391.63, 11,580.55 and 4,615.21 is: 6,369.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,391.63 : 11,580.55 = 4,615.21 : x
  2. Step 2: Convert to fraction form
    8,391.63/11,580.55 = 4,615.21/x
  3. Step 3: Cross multiply
    8,391.63x = 11,580.55 × 4,615.21
  4. Step 4: Simplify right side
    8,391.63x = 53,446,612.26
  5. Step 5: Solve for x
    x = 53,446,612.26/8,391.63
  6. Step 6: Final answer
    x = 6,369.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.