Home / 5,237.79-7,856.62-2,117.77

Finding the Fourth Proportional to 5,237.79, 7,856.62 and 2,117.77

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Solution

The fourth proportional to 5,237.79, 7,856.62 and 2,117.77 is: 3,176.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,237.79 : 7,856.62 = 2,117.77 : x
  2. Step 2: Convert to fraction form
    5,237.79/7,856.62 = 2,117.77/x
  3. Step 3: Cross multiply
    5,237.79x = 7,856.62 × 2,117.77
  4. Step 4: Simplify right side
    5,237.79x = 16,638,517.25
  5. Step 5: Solve for x
    x = 16,638,517.25/5,237.79
  6. Step 6: Final answer
    x = 3,176.63

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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.