Home / 4,478.82-6,721.32-1,557.12

Finding the Fourth Proportional to 4,478.82, 6,721.32 and 1,557.12

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Solution

The fourth proportional to 4,478.82, 6,721.32 and 1,557.12 is: 2,336.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,478.82 : 6,721.32 = 1,557.12 : x
  2. Step 2: Convert to fraction form
    4,478.82/6,721.32 = 1,557.12/x
  3. Step 3: Cross multiply
    4,478.82x = 6,721.32 × 1,557.12
  4. Step 4: Simplify right side
    4,478.82x = 10,465,901.80
  5. Step 5: Solve for x
    x = 10,465,901.80/4,478.82
  6. Step 6: Final answer
    x = 2,336.75

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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.