Home / 5,257.40-7,886.91-2,485.58

Finding the Fourth Proportional to 5,257.40, 7,886.91 and 2,485.58

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Solution

The fourth proportional to 5,257.40, 7,886.91 and 2,485.58 is: 3,728.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,257.40 : 7,886.91 = 2,485.58 : x
  2. Step 2: Convert to fraction form
    5,257.40/7,886.91 = 2,485.58/x
  3. Step 3: Cross multiply
    5,257.40x = 7,886.91 × 2,485.58
  4. Step 4: Simplify right side
    5,257.40x = 19,603,545.76
  5. Step 5: Solve for x
    x = 19,603,545.76/5,257.40
  6. Step 6: Final answer
    x = 3,728.75

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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.