Home / 1,931.92-2,663.64-1,145.68

Finding the Fourth Proportional to 1,931.92, 2,663.64 and 1,145.68

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Solution

The fourth proportional to 1,931.92, 2,663.64 and 1,145.68 is: 1,579.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,931.92 : 2,663.64 = 1,145.68 : x
  2. Step 2: Convert to fraction form
    1,931.92/2,663.64 = 1,145.68/x
  3. Step 3: Cross multiply
    1,931.92x = 2,663.64 × 1,145.68
  4. Step 4: Simplify right side
    1,931.92x = 3,051,679.08
  5. Step 5: Solve for x
    x = 3,051,679.08/1,931.92
  6. Step 6: Final answer
    x = 1,579.61

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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.