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Finding the Fourth Proportional to 1,412.86, 2,119.20 and 590.84

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Solution

The fourth proportional to 1,412.86, 2,119.20 and 590.84 is: 886.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,412.86 : 2,119.20 = 590.84 : x
  2. Step 2: Convert to fraction form
    1,412.86/2,119.20 = 590.84/x
  3. Step 3: Cross multiply
    1,412.86x = 2,119.20 × 590.84
  4. Step 4: Simplify right side
    1,412.86x = 1,252,108.13
  5. Step 5: Solve for x
    x = 1,252,108.13/1,412.86
  6. Step 6: Final answer
    x = 886.22

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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.