Home / 9,278.15-13,920.86-4,080.38

Finding the Fourth Proportional to 9,278.15, 13,920.86 and 4,080.38

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Solution

The fourth proportional to 9,278.15, 13,920.86 and 4,080.38 is: 6,122.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,278.15 : 13,920.86 = 4,080.38 : x
  2. Step 2: Convert to fraction form
    9,278.15/13,920.86 = 4,080.38/x
  3. Step 3: Cross multiply
    9,278.15x = 13,920.86 × 4,080.38
  4. Step 4: Simplify right side
    9,278.15x = 56,802,339.32
  5. Step 5: Solve for x
    x = 56,802,339.32/9,278.15
  6. Step 6: Final answer
    x = 6,122.17

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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.