Home / 2,385.63-3,579.03-1,290

Finding the Fourth Proportional to 2,385.63, 3,579.03 and 1,290

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Solution

The fourth proportional to 2,385.63, 3,579.03 and 1,290 is: 1,935.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,385.63 : 3,579.03 = 1,290 : x
  2. Step 2: Convert to fraction form
    2,385.63/3,579.03 = 1,290/x
  3. Step 3: Cross multiply
    2,385.63x = 3,579.03 × 1,290
  4. Step 4: Simplify right side
    2,385.63x = 4,616,948.70
  5. Step 5: Solve for x
    x = 4,616,948.70/2,385.63
  6. Step 6: Final answer
    x = 1,935.32

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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.