Home / 4,761.08-7,139.84-1,640.20

Finding the Fourth Proportional to 4,761.08, 7,139.84 and 1,640.20

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Solution

The fourth proportional to 4,761.08, 7,139.84 and 1,640.20 is: 2,459.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,761.08 : 7,139.84 = 1,640.20 : x
  2. Step 2: Convert to fraction form
    4,761.08/7,139.84 = 1,640.20/x
  3. Step 3: Cross multiply
    4,761.08x = 7,139.84 × 1,640.20
  4. Step 4: Simplify right side
    4,761.08x = 11,710,765.57
  5. Step 5: Solve for x
    x = 11,710,765.57/4,761.08
  6. Step 6: Final answer
    x = 2,459.69

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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.