Home / 3,126.16-4,315.04-1,800.81

Finding the Fourth Proportional to 3,126.16, 4,315.04 and 1,800.81

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Solution

The fourth proportional to 3,126.16, 4,315.04 and 1,800.81 is: 2,485.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,126.16 : 4,315.04 = 1,800.81 : x
  2. Step 2: Convert to fraction form
    3,126.16/4,315.04 = 1,800.81/x
  3. Step 3: Cross multiply
    3,126.16x = 4,315.04 × 1,800.81
  4. Step 4: Simplify right side
    3,126.16x = 7,770,567.18
  5. Step 5: Solve for x
    x = 7,770,567.18/3,126.16
  6. Step 6: Final answer
    x = 2,485.66

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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.