Home / 4,278.29-6,416.78-1,356.21

Finding the Fourth Proportional to 4,278.29, 6,416.78 and 1,356.21

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Solution

The fourth proportional to 4,278.29, 6,416.78 and 1,356.21 is: 2,034.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,278.29 : 6,416.78 = 1,356.21 : x
  2. Step 2: Convert to fraction form
    4,278.29/6,416.78 = 1,356.21/x
  3. Step 3: Cross multiply
    4,278.29x = 6,416.78 × 1,356.21
  4. Step 4: Simplify right side
    4,278.29x = 8,702,494.42
  5. Step 5: Solve for x
    x = 8,702,494.42/4,278.29
  6. Step 6: Final answer
    x = 2,034.11

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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.