Home / 5,697.09-7,861.87-3,145.08

Finding the Fourth Proportional to 5,697.09, 7,861.87 and 3,145.08

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Solution

The fourth proportional to 5,697.09, 7,861.87 and 3,145.08 is: 4,340.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,697.09 : 7,861.87 = 3,145.08 : x
  2. Step 2: Convert to fraction form
    5,697.09/7,861.87 = 3,145.08/x
  3. Step 3: Cross multiply
    5,697.09x = 7,861.87 × 3,145.08
  4. Step 4: Simplify right side
    5,697.09x = 24,726,210.10
  5. Step 5: Solve for x
    x = 24,726,210.10/5,697.09
  6. Step 6: Final answer
    x = 4,340.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.