Home / 3,981.63-5,970.40-1,788.48

Finding the Fourth Proportional to 3,981.63, 5,970.40 and 1,788.48

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Solution

The fourth proportional to 3,981.63, 5,970.40 and 1,788.48 is: 2,681.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,981.63 : 5,970.40 = 1,788.48 : x
  2. Step 2: Convert to fraction form
    3,981.63/5,970.40 = 1,788.48/x
  3. Step 3: Cross multiply
    3,981.63x = 5,970.40 × 1,788.48
  4. Step 4: Simplify right side
    3,981.63x = 10,677,902.20
  5. Step 5: Solve for x
    x = 10,677,902.20/3,981.63
  6. Step 6: Final answer
    x = 2,681.79

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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.