Home / 2,130.76-2,944.34-1,721.16

Finding the Fourth Proportional to 2,130.76, 2,944.34 and 1,721.16

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Solution

The fourth proportional to 2,130.76, 2,944.34 and 1,721.16 is: 2,378.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,130.76 : 2,944.34 = 1,721.16 : x
  2. Step 2: Convert to fraction form
    2,130.76/2,944.34 = 1,721.16/x
  3. Step 3: Cross multiply
    2,130.76x = 2,944.34 × 1,721.16
  4. Step 4: Simplify right side
    2,130.76x = 5,067,680.23
  5. Step 5: Solve for x
    x = 5,067,680.23/2,130.76
  6. Step 6: Final answer
    x = 2,378.34

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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.