Home / 5,111.84-7,678.68-3,660.32

Finding the Fourth Proportional to 5,111.84, 7,678.68 and 3,660.32

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Solution

The fourth proportional to 5,111.84, 7,678.68 and 3,660.32 is: 5,498.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,111.84 : 7,678.68 = 3,660.32 : x
  2. Step 2: Convert to fraction form
    5,111.84/7,678.68 = 3,660.32/x
  3. Step 3: Cross multiply
    5,111.84x = 7,678.68 × 3,660.32
  4. Step 4: Simplify right side
    5,111.84x = 28,106,425.98
  5. Step 5: Solve for x
    x = 28,106,425.98/5,111.84
  6. Step 6: Final answer
    x = 5,498.30

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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.