Home / 9,785.86-13,504.38-5,309.71

Finding the Fourth Proportional to 9,785.86, 13,504.38 and 5,309.71

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Solution

The fourth proportional to 9,785.86, 13,504.38 and 5,309.71 is: 7,327.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,785.86 : 13,504.38 = 5,309.71 : x
  2. Step 2: Convert to fraction form
    9,785.86/13,504.38 = 5,309.71/x
  3. Step 3: Cross multiply
    9,785.86x = 13,504.38 × 5,309.71
  4. Step 4: Simplify right side
    9,785.86x = 71,704,341.53
  5. Step 5: Solve for x
    x = 71,704,341.53/9,785.86
  6. Step 6: Final answer
    x = 7,327.34

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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.