Home / 6,109.60-8,430.80-3,457.28

Finding the Fourth Proportional to 6,109.60, 8,430.80 and 3,457.28

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Solution

The fourth proportional to 6,109.60, 8,430.80 and 3,457.28 is: 4,770.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,109.60 : 8,430.80 = 3,457.28 : x
  2. Step 2: Convert to fraction form
    6,109.60/8,430.80 = 3,457.28/x
  3. Step 3: Cross multiply
    6,109.60x = 8,430.80 × 3,457.28
  4. Step 4: Simplify right side
    6,109.60x = 29,147,636.22
  5. Step 5: Solve for x
    x = 29,147,636.22/6,109.60
  6. Step 6: Final answer
    x = 4,770.79

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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.