Home / 9,765.60-13,478.48-6,622.80

Finding the Fourth Proportional to 9,765.60, 13,478.48 and 6,622.80

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Solution

The fourth proportional to 9,765.60, 13,478.48 and 6,622.80 is: 9,140.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,765.60 : 13,478.48 = 6,622.80 : x
  2. Step 2: Convert to fraction form
    9,765.60/13,478.48 = 6,622.80/x
  3. Step 3: Cross multiply
    9,765.60x = 13,478.48 × 6,622.80
  4. Step 4: Simplify right side
    9,765.60x = 89,265,277.34
  5. Step 5: Solve for x
    x = 89,265,277.34/9,765.60
  6. Step 6: Final answer
    x = 9,140.79

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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.