Home / 2,930.40-4,388.64-1,695.20

Finding the Fourth Proportional to 2,930.40, 4,388.64 and 1,695.20

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Solution

The fourth proportional to 2,930.40, 4,388.64 and 1,695.20 is: 2,538.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,930.40 : 4,388.64 = 1,695.20 : x
  2. Step 2: Convert to fraction form
    2,930.40/4,388.64 = 1,695.20/x
  3. Step 3: Cross multiply
    2,930.40x = 4,388.64 × 1,695.20
  4. Step 4: Simplify right side
    2,930.40x = 7,439,622.53
  5. Step 5: Solve for x
    x = 7,439,622.53/2,930.40
  6. Step 6: Final answer
    x = 2,538.77

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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.