Home / 3,159.84-4,740.32-1,080.08

Finding the Fourth Proportional to 3,159.84, 4,740.32 and 1,080.08

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Solution

The fourth proportional to 3,159.84, 4,740.32 and 1,080.08 is: 1,620.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,159.84 : 4,740.32 = 1,080.08 : x
  2. Step 2: Convert to fraction form
    3,159.84/4,740.32 = 1,080.08/x
  3. Step 3: Cross multiply
    3,159.84x = 4,740.32 × 1,080.08
  4. Step 4: Simplify right side
    3,159.84x = 5,119,903.82
  5. Step 5: Solve for x
    x = 5,119,903.82/3,159.84
  6. Step 6: Final answer
    x = 1,620.30

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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.