Home / 7,720.20-11,574.81-6,256.13

Finding the Fourth Proportional to 7,720.20, 11,574.81 and 6,256.13

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Solution

The fourth proportional to 7,720.20, 11,574.81 and 6,256.13 is: 9,379.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,720.20 : 11,574.81 = 6,256.13 : x
  2. Step 2: Convert to fraction form
    7,720.20/11,574.81 = 6,256.13/x
  3. Step 3: Cross multiply
    7,720.20x = 11,574.81 × 6,256.13
  4. Step 4: Simplify right side
    7,720.20x = 72,413,458.21
  5. Step 5: Solve for x
    x = 72,413,458.21/7,720.20
  6. Step 6: Final answer
    x = 9,379.74

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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.