Home / 3,320.31-4,980.30-1,240.16

Finding the Fourth Proportional to 3,320.31, 4,980.30 and 1,240.16

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Solution

The fourth proportional to 3,320.31, 4,980.30 and 1,240.16 is: 1,860.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,320.31 : 4,980.30 = 1,240.16 : x
  2. Step 2: Convert to fraction form
    3,320.31/4,980.30 = 1,240.16/x
  3. Step 3: Cross multiply
    3,320.31x = 4,980.30 × 1,240.16
  4. Step 4: Simplify right side
    3,320.31x = 6,176,339.30
  5. Step 5: Solve for x
    x = 6,176,339.30/3,320.31
  6. Step 6: Final answer
    x = 1,860.17

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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.