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Finding the Fourth Proportional to 1,581.36, 2,371.41 and 656.29

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Solution

The fourth proportional to 1,581.36, 2,371.41 and 656.29 is: 984.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,581.36 : 2,371.41 = 656.29 : x
  2. Step 2: Convert to fraction form
    1,581.36/2,371.41 = 656.29/x
  3. Step 3: Cross multiply
    1,581.36x = 2,371.41 × 656.29
  4. Step 4: Simplify right side
    1,581.36x = 1,556,332.67
  5. Step 5: Solve for x
    x = 1,556,332.67/1,581.36
  6. Step 6: Final answer
    x = 984.17

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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.