Home / 4,478.96-6,181.05-2,688.20

Finding the Fourth Proportional to 4,478.96, 6,181.05 and 2,688.20

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Solution

The fourth proportional to 4,478.96, 6,181.05 and 2,688.20 is: 3,709.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,478.96 : 6,181.05 = 2,688.20 : x
  2. Step 2: Convert to fraction form
    4,478.96/6,181.05 = 2,688.20/x
  3. Step 3: Cross multiply
    4,478.96x = 6,181.05 × 2,688.20
  4. Step 4: Simplify right side
    4,478.96x = 16,615,898.61
  5. Step 5: Solve for x
    x = 16,615,898.61/4,478.96
  6. Step 6: Final answer
    x = 3,709.77

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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.