Home / 2,143.24-3,215.36-910.76

Finding the Fourth Proportional to 2,143.24, 3,215.36 and 910.76

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Solution

The fourth proportional to 2,143.24, 3,215.36 and 910.76 is: 1,366.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,143.24 : 3,215.36 = 910.76 : x
  2. Step 2: Convert to fraction form
    2,143.24/3,215.36 = 910.76/x
  3. Step 3: Cross multiply
    2,143.24x = 3,215.36 × 910.76
  4. Step 4: Simplify right side
    2,143.24x = 2,928,421.27
  5. Step 5: Solve for x
    x = 2,928,421.27/2,143.24
  6. Step 6: Final answer
    x = 1,366.35

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Similar ratio
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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.