Home / 1,477.24-2,215.85-381.60

Finding the Fourth Proportional to 1,477.24, 2,215.85 and 381.60

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Solution

The fourth proportional to 1,477.24, 2,215.85 and 381.60 is: 572.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,477.24 : 2,215.85 = 381.60 : x
  2. Step 2: Convert to fraction form
    1,477.24/2,215.85 = 381.60/x
  3. Step 3: Cross multiply
    1,477.24x = 2,215.85 × 381.60
  4. Step 4: Simplify right side
    1,477.24x = 845,566.45
  5. Step 5: Solve for x
    x = 845,566.45/1,477.24
  6. Step 6: Final answer
    x = 572.40

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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.