Home / 7,941.60-11,909.35-3,778.40

Finding the Fourth Proportional to 7,941.60, 11,909.35 and 3,778.40

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Solution

The fourth proportional to 7,941.60, 11,909.35 and 3,778.40 is: 5,666.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,941.60 : 11,909.35 = 3,778.40 : x
  2. Step 2: Convert to fraction form
    7,941.60/11,909.35 = 3,778.40/x
  3. Step 3: Cross multiply
    7,941.60x = 11,909.35 × 3,778.40
  4. Step 4: Simplify right side
    7,941.60x = 44,998,288.04
  5. Step 5: Solve for x
    x = 44,998,288.04/7,941.60
  6. Step 6: Final answer
    x = 5,666.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.