Home / 7,814.91-10,784.58-4,278.12

Finding the Fourth Proportional to 7,814.91, 10,784.58 and 4,278.12

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Solution

The fourth proportional to 7,814.91, 10,784.58 and 4,278.12 is: 5,903.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,814.91 : 10,784.58 = 4,278.12 : x
  2. Step 2: Convert to fraction form
    7,814.91/10,784.58 = 4,278.12/x
  3. Step 3: Cross multiply
    7,814.91x = 10,784.58 × 4,278.12
  4. Step 4: Simplify right side
    7,814.91x = 46,137,727.39
  5. Step 5: Solve for x
    x = 46,137,727.39/7,814.91
  6. Step 6: Final answer
    x = 5,903.81

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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.