Home / 3,126.66-4,315.32-1,800.12

Finding the Fourth Proportional to 3,126.66, 4,315.32 and 1,800.12

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Solution

The fourth proportional to 3,126.66, 4,315.32 and 1,800.12 is: 2,484.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,126.66 : 4,315.32 = 1,800.12 : x
  2. Step 2: Convert to fraction form
    3,126.66/4,315.32 = 1,800.12/x
  3. Step 3: Cross multiply
    3,126.66x = 4,315.32 × 1,800.12
  4. Step 4: Simplify right side
    3,126.66x = 7,768,093.84
  5. Step 5: Solve for x
    x = 7,768,093.84/3,126.66
  6. Step 6: Final answer
    x = 2,484.47

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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.