Home / 5,143.67-7,098.30-2,785.81

Finding the Fourth Proportional to 5,143.67, 7,098.30 and 2,785.81

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Solution

The fourth proportional to 5,143.67, 7,098.30 and 2,785.81 is: 3,844.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,143.67 : 7,098.30 = 2,785.81 : x
  2. Step 2: Convert to fraction form
    5,143.67/7,098.30 = 2,785.81/x
  3. Step 3: Cross multiply
    5,143.67x = 7,098.30 × 2,785.81
  4. Step 4: Simplify right side
    5,143.67x = 19,774,515.12
  5. Step 5: Solve for x
    x = 19,774,515.12/5,143.67
  6. Step 6: Final answer
    x = 3,844.44

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Double scale
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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.