Home / 7,975.85-11,001.77-5,142.17

Finding the Fourth Proportional to 7,975.85, 11,001.77 and 5,142.17

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Solution

The fourth proportional to 7,975.85, 11,001.77 and 5,142.17 is: 7,093.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,975.85 : 11,001.77 = 5,142.17 : x
  2. Step 2: Convert to fraction form
    7,975.85/11,001.77 = 5,142.17/x
  3. Step 3: Cross multiply
    7,975.85x = 11,001.77 × 5,142.17
  4. Step 4: Simplify right side
    7,975.85x = 56,572,890.92
  5. Step 5: Solve for x
    x = 56,572,890.92/7,975.85
  6. Step 6: Final answer
    x = 7,093.03

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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.