Home / 2,140.49-3,210.69-986.24

Finding the Fourth Proportional to 2,140.49, 3,210.69 and 986.24

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Solution

The fourth proportional to 2,140.49, 3,210.69 and 986.24 is: 1,479.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,140.49 : 3,210.69 = 986.24 : x
  2. Step 2: Convert to fraction form
    2,140.49/3,210.69 = 986.24/x
  3. Step 3: Cross multiply
    2,140.49x = 3,210.69 × 986.24
  4. Step 4: Simplify right side
    2,140.49x = 3,166,508.44
  5. Step 5: Solve for x
    x = 3,166,508.44/2,140.49
  6. Step 6: Final answer
    x = 1,479.34

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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.