Home / 3,150.31-4,721.98-1,300.40

Finding the Fourth Proportional to 3,150.31, 4,721.98 and 1,300.40

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Solution

The fourth proportional to 3,150.31, 4,721.98 and 1,300.40 is: 1,949.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,150.31 : 4,721.98 = 1,300.40 : x
  2. Step 2: Convert to fraction form
    3,150.31/4,721.98 = 1,300.40/x
  3. Step 3: Cross multiply
    3,150.31x = 4,721.98 × 1,300.40
  4. Step 4: Simplify right side
    3,150.31x = 6,140,488.12
  5. Step 5: Solve for x
    x = 6,140,488.12/3,150.31
  6. Step 6: Final answer
    x = 1,949.17

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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.