Home / 4,192.40-6,288.40-1,418.80

Finding the Fourth Proportional to 4,192.40, 6,288.40 and 1,418.80

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Solution

The fourth proportional to 4,192.40, 6,288.40 and 1,418.80 is: 2,128.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,192.40 : 6,288.40 = 1,418.80 : x
  2. Step 2: Convert to fraction form
    4,192.40/6,288.40 = 1,418.80/x
  3. Step 3: Cross multiply
    4,192.40x = 6,288.40 × 1,418.80
  4. Step 4: Simplify right side
    4,192.40x = 8,921,981.92
  5. Step 5: Solve for x
    x = 8,921,981.92/4,192.40
  6. Step 6: Final answer
    x = 2,128.13

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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.