Home / 4,278.08-6,416.47-1,356

Finding the Fourth Proportional to 4,278.08, 6,416.47 and 1,356

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Solution

The fourth proportional to 4,278.08, 6,416.47 and 1,356 is: 2,033.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,278.08 : 6,416.47 = 1,356 : x
  2. Step 2: Convert to fraction form
    4,278.08/6,416.47 = 1,356/x
  3. Step 3: Cross multiply
    4,278.08x = 6,416.47 × 1,356
  4. Step 4: Simplify right side
    4,278.08x = 8,700,729.93
  5. Step 5: Solve for x
    x = 8,700,729.93/4,278.08
  6. Step 6: Final answer
    x = 2,033.80

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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.