Home / 7,685.16-11,520.45-3,785.01

Finding the Fourth Proportional to 7,685.16, 11,520.45 and 3,785.01

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Solution

The fourth proportional to 7,685.16, 11,520.45 and 3,785.01 is: 5,673.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,685.16 : 11,520.45 = 3,785.01 : x
  2. Step 2: Convert to fraction form
    7,685.16/11,520.45 = 3,785.01/x
  3. Step 3: Cross multiply
    7,685.16x = 11,520.45 × 3,785.01
  4. Step 4: Simplify right side
    7,685.16x = 43,605,018.45
  5. Step 5: Solve for x
    x = 43,605,018.45/7,685.16
  6. Step 6: Final answer
    x = 5,673.92

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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.