Home / 5,391.16-8,071.32-3,911.68

Finding the Fourth Proportional to 5,391.16, 8,071.32 and 3,911.68

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Solution

The fourth proportional to 5,391.16, 8,071.32 and 3,911.68 is: 5,856.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,391.16 : 8,071.32 = 3,911.68 : x
  2. Step 2: Convert to fraction form
    5,391.16/8,071.32 = 3,911.68/x
  3. Step 3: Cross multiply
    5,391.16x = 8,071.32 × 3,911.68
  4. Step 4: Simplify right side
    5,391.16x = 31,572,421.02
  5. Step 5: Solve for x
    x = 31,572,421.02/5,391.16
  6. Step 6: Final answer
    x = 5,856.33

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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.