Home / 4,479.21-6,181.40-2,688.45

Finding the Fourth Proportional to 4,479.21, 6,181.40 and 2,688.45

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Solution

The fourth proportional to 4,479.21, 6,181.40 and 2,688.45 is: 3,710.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,479.21 : 6,181.40 = 2,688.45 : x
  2. Step 2: Convert to fraction form
    4,479.21/6,181.40 = 2,688.45/x
  3. Step 3: Cross multiply
    4,479.21x = 6,181.40 × 2,688.45
  4. Step 4: Simplify right side
    4,479.21x = 16,618,371.39
  5. Step 5: Solve for x
    x = 16,618,371.39/4,479.21
  6. Step 6: Final answer
    x = 3,710.11

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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.