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Finding the Fourth Proportional to 5,818.88, 8,721.60 and 3,628.16

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Solution

The fourth proportional to 5,818.88, 8,721.60 and 3,628.16 is: 5,438.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,818.88 : 8,721.60 = 3,628.16 : x
  2. Step 2: Convert to fraction form
    5,818.88/8,721.60 = 3,628.16/x
  3. Step 3: Cross multiply
    5,818.88x = 8,721.60 × 3,628.16
  4. Step 4: Simplify right side
    5,818.88x = 31,643,360.26
  5. Step 5: Solve for x
    x = 31,643,360.26/5,818.88
  6. Step 6: Final answer
    x = 5,438.05

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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.