Home / 4,217.60-6,328.96-1,909.12

Finding the Fourth Proportional to 4,217.60, 6,328.96 and 1,909.12

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Solution

The fourth proportional to 4,217.60, 6,328.96 and 1,909.12 is: 2,864.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,217.60 : 6,328.96 = 1,909.12 : x
  2. Step 2: Convert to fraction form
    4,217.60/6,328.96 = 1,909.12/x
  3. Step 3: Cross multiply
    4,217.60x = 6,328.96 × 1,909.12
  4. Step 4: Simplify right side
    4,217.60x = 12,082,744.12
  5. Step 5: Solve for x
    x = 12,082,744.12/4,217.60
  6. Step 6: Final answer
    x = 2,864.84

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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.