Home / 3,929.28-5,894.16-1,620

Finding the Fourth Proportional to 3,929.28, 5,894.16 and 1,620

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Solution

The fourth proportional to 3,929.28, 5,894.16 and 1,620 is: 2,430.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,929.28 : 5,894.16 = 1,620 : x
  2. Step 2: Convert to fraction form
    3,929.28/5,894.16 = 1,620/x
  3. Step 3: Cross multiply
    3,929.28x = 5,894.16 × 1,620
  4. Step 4: Simplify right side
    3,929.28x = 9,548,539.20
  5. Step 5: Solve for x
    x = 9,548,539.20/3,929.28
  6. Step 6: Final answer
    x = 2,430.10

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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.