Home / 7,872.28-11,808.42-2,678.16

Finding the Fourth Proportional to 7,872.28, 11,808.42 and 2,678.16

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Solution

The fourth proportional to 7,872.28, 11,808.42 and 2,678.16 is: 4,017.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,872.28 : 11,808.42 = 2,678.16 : x
  2. Step 2: Convert to fraction form
    7,872.28/11,808.42 = 2,678.16/x
  3. Step 3: Cross multiply
    7,872.28x = 11,808.42 × 2,678.16
  4. Step 4: Simplify right side
    7,872.28x = 31,624,838.11
  5. Step 5: Solve for x
    x = 31,624,838.11/7,872.28
  6. Step 6: Final answer
    x = 4,017.24

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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.