Home / 7,423.94-11,129.77-3,911.99

Finding the Fourth Proportional to 7,423.94, 11,129.77 and 3,911.99

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Solution

The fourth proportional to 7,423.94, 11,129.77 and 3,911.99 is: 5,864.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,423.94 : 11,129.77 = 3,911.99 : x
  2. Step 2: Convert to fraction form
    7,423.94/11,129.77 = 3,911.99/x
  3. Step 3: Cross multiply
    7,423.94x = 11,129.77 × 3,911.99
  4. Step 4: Simplify right side
    7,423.94x = 43,539,483.51
  5. Step 5: Solve for x
    x = 43,539,483.51/7,423.94
  6. Step 6: Final answer
    x = 5,864.74

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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.