Home / 5,681.22-8,522.19-1,785.78

Finding the Fourth Proportional to 5,681.22, 8,522.19 and 1,785.78

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Solution

The fourth proportional to 5,681.22, 8,522.19 and 1,785.78 is: 2,678.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,681.22 : 8,522.19 = 1,785.78 : x
  2. Step 2: Convert to fraction form
    5,681.22/8,522.19 = 1,785.78/x
  3. Step 3: Cross multiply
    5,681.22x = 8,522.19 × 1,785.78
  4. Step 4: Simplify right side
    5,681.22x = 15,218,756.46
  5. Step 5: Solve for x
    x = 15,218,756.46/5,681.22
  6. Step 6: Final answer
    x = 2,678.78

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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.