Home / 7,812.21-10,785.45-5,165.94

Finding the Fourth Proportional to 7,812.21, 10,785.45 and 5,165.94

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Solution

The fourth proportional to 7,812.21, 10,785.45 and 5,165.94 is: 7,132.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,812.21 : 10,785.45 = 5,165.94 : x
  2. Step 2: Convert to fraction form
    7,812.21/10,785.45 = 5,165.94/x
  3. Step 3: Cross multiply
    7,812.21x = 10,785.45 × 5,165.94
  4. Step 4: Simplify right side
    7,812.21x = 55,716,987.57
  5. Step 5: Solve for x
    x = 55,716,987.57/7,812.21
  6. Step 6: Final answer
    x = 7,132.04

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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.