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Finding the Fourth Proportional to 7,807.94, 11,711.93 and 2,875.44

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Solution

The fourth proportional to 7,807.94, 11,711.93 and 2,875.44 is: 4,313.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,807.94 : 11,711.93 = 2,875.44 : x
  2. Step 2: Convert to fraction form
    7,807.94/11,711.93 = 2,875.44/x
  3. Step 3: Cross multiply
    7,807.94x = 11,711.93 × 2,875.44
  4. Step 4: Simplify right side
    7,807.94x = 33,676,937.62
  5. Step 5: Solve for x
    x = 33,676,937.62/7,807.94
  6. Step 6: Final answer
    x = 4,313.17

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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.