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Finding the Fourth Proportional to 1,471.39, 2,015.81 and 1,416

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Solution

The fourth proportional to 1,471.39, 2,015.81 and 1,416 is: 1,939.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,471.39 : 2,015.81 = 1,416 : x
  2. Step 2: Convert to fraction form
    1,471.39/2,015.81 = 1,416/x
  3. Step 3: Cross multiply
    1,471.39x = 2,015.81 × 1,416
  4. Step 4: Simplify right side
    1,471.39x = 2,854,386.96
  5. Step 5: Solve for x
    x = 2,854,386.96/1,471.39
  6. Step 6: Final answer
    x = 1,939.93

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.