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Finding the Fourth Proportional to 6,242.87, 8,615.16 and 3,590.80

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Solution

The fourth proportional to 6,242.87, 8,615.16 and 3,590.80 is: 4,955.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,242.87 : 8,615.16 = 3,590.80 : x
  2. Step 2: Convert to fraction form
    6,242.87/8,615.16 = 3,590.80/x
  3. Step 3: Cross multiply
    6,242.87x = 8,615.16 × 3,590.80
  4. Step 4: Simplify right side
    6,242.87x = 30,935,316.53
  5. Step 5: Solve for x
    x = 30,935,316.53/6,242.87
  6. Step 6: Final answer
    x = 4,955.30

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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.