Home / 7,074.96-9,762.60-3,930.72

Finding the Fourth Proportional to 7,074.96, 9,762.60 and 3,930.72

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Solution

The fourth proportional to 7,074.96, 9,762.60 and 3,930.72 is: 5,423.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,074.96 : 9,762.60 = 3,930.72 : x
  2. Step 2: Convert to fraction form
    7,074.96/9,762.60 = 3,930.72/x
  3. Step 3: Cross multiply
    7,074.96x = 9,762.60 × 3,930.72
  4. Step 4: Simplify right side
    7,074.96x = 38,374,047.07
  5. Step 5: Solve for x
    x = 38,374,047.07/7,074.96
  6. Step 6: Final answer
    x = 5,423.92

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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.