Home / 5,139.58-7,706.46-1,628.92

Finding the Fourth Proportional to 5,139.58, 7,706.46 and 1,628.92

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Solution

The fourth proportional to 5,139.58, 7,706.46 and 1,628.92 is: 2,442.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,139.58 : 7,706.46 = 1,628.92 : x
  2. Step 2: Convert to fraction form
    5,139.58/7,706.46 = 1,628.92/x
  3. Step 3: Cross multiply
    5,139.58x = 7,706.46 × 1,628.92
  4. Step 4: Simplify right side
    5,139.58x = 12,553,206.82
  5. Step 5: Solve for x
    x = 12,553,206.82/5,139.58
  6. Step 6: Final answer
    x = 2,442.46

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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.