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Finding the Fourth Proportional to 6,511.71, 8,985.20 and 3,678.33

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Solution

The fourth proportional to 6,511.71, 8,985.20 and 3,678.33 is: 5,075.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,511.71 : 8,985.20 = 3,678.33 : x
  2. Step 2: Convert to fraction form
    6,511.71/8,985.20 = 3,678.33/x
  3. Step 3: Cross multiply
    6,511.71x = 8,985.20 × 3,678.33
  4. Step 4: Simplify right side
    6,511.71x = 33,050,512.32
  5. Step 5: Solve for x
    x = 33,050,512.32/6,511.71
  6. Step 6: Final answer
    x = 5,075.55

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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.