Home / 4,678.36-7,018.92-1,391.56

Finding the Fourth Proportional to 4,678.36, 7,018.92 and 1,391.56

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Solution

The fourth proportional to 4,678.36, 7,018.92 and 1,391.56 is: 2,087.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,678.36 : 7,018.92 = 1,391.56 : x
  2. Step 2: Convert to fraction form
    4,678.36/7,018.92 = 1,391.56/x
  3. Step 3: Cross multiply
    4,678.36x = 7,018.92 × 1,391.56
  4. Step 4: Simplify right side
    4,678.36x = 9,767,248.32
  5. Step 5: Solve for x
    x = 9,767,248.32/4,678.36
  6. Step 6: Final answer
    x = 2,087.75

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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.