Home / 6,457.95-8,909.68-4,221.11

Finding the Fourth Proportional to 6,457.95, 8,909.68 and 4,221.11

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Solution

The fourth proportional to 6,457.95, 8,909.68 and 4,221.11 is: 5,823.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,457.95 : 8,909.68 = 4,221.11 : x
  2. Step 2: Convert to fraction form
    6,457.95/8,909.68 = 4,221.11/x
  3. Step 3: Cross multiply
    6,457.95x = 8,909.68 × 4,221.11
  4. Step 4: Simplify right side
    6,457.95x = 37,608,759.86
  5. Step 5: Solve for x
    x = 37,608,759.86/6,457.95
  6. Step 6: Final answer
    x = 5,823.64

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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.