Home / 3,126.64-4,315.62-1,868.56

Finding the Fourth Proportional to 3,126.64, 4,315.62 and 1,868.56

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Solution

The fourth proportional to 3,126.64, 4,315.62 and 1,868.56 is: 2,579.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,126.64 : 4,315.62 = 1,868.56 : x
  2. Step 2: Convert to fraction form
    3,126.64/4,315.62 = 1,868.56/x
  3. Step 3: Cross multiply
    3,126.64x = 4,315.62 × 1,868.56
  4. Step 4: Simplify right side
    3,126.64x = 8,063,994.91
  5. Step 5: Solve for x
    x = 8,063,994.91/3,126.64
  6. Step 6: Final answer
    x = 2,579.12

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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.