Home / 4,478.40-6,179.64-2,488.32

Finding the Fourth Proportional to 4,478.40, 6,179.64 and 2,488.32

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Solution

The fourth proportional to 4,478.40, 6,179.64 and 2,488.32 is: 3,433.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,478.40 : 6,179.64 = 2,488.32 : x
  2. Step 2: Convert to fraction form
    4,478.40/6,179.64 = 2,488.32/x
  3. Step 3: Cross multiply
    4,478.40x = 6,179.64 × 2,488.32
  4. Step 4: Simplify right side
    4,478.40x = 15,376,921.80
  5. Step 5: Solve for x
    x = 15,376,921.80/4,478.40
  6. Step 6: Final answer
    x = 3,433.57

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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.