Home / 1,581.75-2,175.53-1,384.92

Finding the Fourth Proportional to 1,581.75, 2,175.53 and 1,384.92

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Solution

The fourth proportional to 1,581.75, 2,175.53 and 1,384.92 is: 1,904.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,581.75 : 2,175.53 = 1,384.92 : x
  2. Step 2: Convert to fraction form
    1,581.75/2,175.53 = 1,384.92/x
  3. Step 3: Cross multiply
    1,581.75x = 2,175.53 × 1,384.92
  4. Step 4: Simplify right side
    1,581.75x = 3,012,928.08
  5. Step 5: Solve for x
    x = 3,012,928.08/1,581.75
  6. Step 6: Final answer
    x = 1,904.81

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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.