Home / 7,785.10-10,755.13-5,102.68

Finding the Fourth Proportional to 7,785.10, 10,755.13 and 5,102.68

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Solution

The fourth proportional to 7,785.10, 10,755.13 and 5,102.68 is: 7,049.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,785.10 : 10,755.13 = 5,102.68 : x
  2. Step 2: Convert to fraction form
    7,785.10/10,755.13 = 5,102.68/x
  3. Step 3: Cross multiply
    7,785.10x = 10,755.13 × 5,102.68
  4. Step 4: Simplify right side
    7,785.10x = 54,879,986.75
  5. Step 5: Solve for x
    x = 54,879,986.75/7,785.10
  6. Step 6: Final answer
    x = 7,049.36

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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.