Home / 7,985.07-11,015.68-5,151.71

Finding the Fourth Proportional to 7,985.07, 11,015.68 and 5,151.71

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Solution

The fourth proportional to 7,985.07, 11,015.68 and 5,151.71 is: 7,106.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,985.07 : 11,015.68 = 5,151.71 : x
  2. Step 2: Convert to fraction form
    7,985.07/11,015.68 = 5,151.71/x
  3. Step 3: Cross multiply
    7,985.07x = 11,015.68 × 5,151.71
  4. Step 4: Simplify right side
    7,985.07x = 56,749,563.05
  5. Step 5: Solve for x
    x = 56,749,563.05/7,985.07
  6. Step 6: Final answer
    x = 7,106.96

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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.