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Finding the Fourth Proportional to 5,718.38, 7,890.48 and 3,200.36

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Solution

The fourth proportional to 5,718.38, 7,890.48 and 3,200.36 is: 4,416.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,718.38 : 7,890.48 = 3,200.36 : x
  2. Step 2: Convert to fraction form
    5,718.38/7,890.48 = 3,200.36/x
  3. Step 3: Cross multiply
    5,718.38x = 7,890.48 × 3,200.36
  4. Step 4: Simplify right side
    5,718.38x = 25,252,337.12
  5. Step 5: Solve for x
    x = 25,252,337.12/5,718.38
  6. Step 6: Final answer
    x = 4,416.00

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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.