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Finding the Fourth Proportional to 7,810.59, 11,710.41 and 2,878.92

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Solution

The fourth proportional to 7,810.59, 11,710.41 and 2,878.92 is: 4,316.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,810.59 : 11,710.41 = 2,878.92 : x
  2. Step 2: Convert to fraction form
    7,810.59/11,710.41 = 2,878.92/x
  3. Step 3: Cross multiply
    7,810.59x = 11,710.41 × 2,878.92
  4. Step 4: Simplify right side
    7,810.59x = 33,713,333.56
  5. Step 5: Solve for x
    x = 33,713,333.56/7,810.59
  6. Step 6: Final answer
    x = 4,316.36

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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.