Home / 4,721.76-7,081.80-2,124.24

Finding the Fourth Proportional to 4,721.76, 7,081.80 and 2,124.24

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Solution

The fourth proportional to 4,721.76, 7,081.80 and 2,124.24 is: 3,185.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,721.76 : 7,081.80 = 2,124.24 : x
  2. Step 2: Convert to fraction form
    4,721.76/7,081.80 = 2,124.24/x
  3. Step 3: Cross multiply
    4,721.76x = 7,081.80 × 2,124.24
  4. Step 4: Simplify right side
    4,721.76x = 15,043,442.83
  5. Step 5: Solve for x
    x = 15,043,442.83/4,721.76
  6. Step 6: Final answer
    x = 3,185.98

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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.