Home / 2,992.07-4,128.45-1,812.45

Finding the Fourth Proportional to 2,992.07, 4,128.45 and 1,812.45

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Solution

The fourth proportional to 2,992.07, 4,128.45 and 1,812.45 is: 2,500.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,992.07 : 4,128.45 = 1,812.45 : x
  2. Step 2: Convert to fraction form
    2,992.07/4,128.45 = 1,812.45/x
  3. Step 3: Cross multiply
    2,992.07x = 4,128.45 × 1,812.45
  4. Step 4: Simplify right side
    2,992.07x = 7,482,619.52
  5. Step 5: Solve for x
    x = 7,482,619.52/2,992.07
  6. Step 6: Final answer
    x = 2,500.82

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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.