Home / 4,278.12-6,417.72-1,812.48

Finding the Fourth Proportional to 4,278.12, 6,417.72 and 1,812.48

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Solution

The fourth proportional to 4,278.12, 6,417.72 and 1,812.48 is: 2,718.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,278.12 : 6,417.72 = 1,812.48 : x
  2. Step 2: Convert to fraction form
    4,278.12/6,417.72 = 1,812.48/x
  3. Step 3: Cross multiply
    4,278.12x = 6,417.72 × 1,812.48
  4. Step 4: Simplify right side
    4,278.12x = 11,631,989.15
  5. Step 5: Solve for x
    x = 11,631,989.15/4,278.12
  6. Step 6: Final answer
    x = 2,718.95

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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.