Home / 2,160.87-2,982.38-1,276.71

Finding the Fourth Proportional to 2,160.87, 2,982.38 and 1,276.71

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Solution

The fourth proportional to 2,160.87, 2,982.38 and 1,276.71 is: 1,762.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,160.87 : 2,982.38 = 1,276.71 : x
  2. Step 2: Convert to fraction form
    2,160.87/2,982.38 = 1,276.71/x
  3. Step 3: Cross multiply
    2,160.87x = 2,982.38 × 1,276.71
  4. Step 4: Simplify right side
    2,160.87x = 3,807,627.99
  5. Step 5: Solve for x
    x = 3,807,627.99/2,160.87
  6. Step 6: Final answer
    x = 1,762.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.