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Finding the Fourth Proportional to 6,307.95, 8,701.10 and 3,918.75

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Solution

The fourth proportional to 6,307.95, 8,701.10 and 3,918.75 is: 5,405.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,307.95 : 8,701.10 = 3,918.75 : x
  2. Step 2: Convert to fraction form
    6,307.95/8,701.10 = 3,918.75/x
  3. Step 3: Cross multiply
    6,307.95x = 8,701.10 × 3,918.75
  4. Step 4: Simplify right side
    6,307.95x = 34,097,416.03
  5. Step 5: Solve for x
    x = 34,097,416.03/6,307.95
  6. Step 6: Final answer
    x = 5,405.47

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Double scale
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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.