Home / 9,148.62-12,620.44-5,785.76

Finding the Fourth Proportional to 9,148.62, 12,620.44 and 5,785.76

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Solution

The fourth proportional to 9,148.62, 12,620.44 and 5,785.76 is: 7,981.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,148.62 : 12,620.44 = 5,785.76 : x
  2. Step 2: Convert to fraction form
    9,148.62/12,620.44 = 5,785.76/x
  3. Step 3: Cross multiply
    9,148.62x = 12,620.44 × 5,785.76
  4. Step 4: Simplify right side
    9,148.62x = 73,018,836.93
  5. Step 5: Solve for x
    x = 73,018,836.93/9,148.62
  6. Step 6: Final answer
    x = 7,981.40

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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.