Home / 6,820.20-9,411.72-4,167.60

Finding the Fourth Proportional to 6,820.20, 9,411.72 and 4,167.60

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Solution

The fourth proportional to 6,820.20, 9,411.72 and 4,167.60 is: 5,751.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,820.20 : 9,411.72 = 4,167.60 : x
  2. Step 2: Convert to fraction form
    6,820.20/9,411.72 = 4,167.60/x
  3. Step 3: Cross multiply
    6,820.20x = 9,411.72 × 4,167.60
  4. Step 4: Simplify right side
    6,820.20x = 39,224,284.27
  5. Step 5: Solve for x
    x = 39,224,284.27/6,820.20
  6. Step 6: Final answer
    x = 5,751.19

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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.