Home / 1,412.90-2,119.60-591.75

Finding the Fourth Proportional to 1,412.90, 2,119.60 and 591.75

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Solution

The fourth proportional to 1,412.90, 2,119.60 and 591.75 is: 887.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,412.90 : 2,119.60 = 591.75 : x
  2. Step 2: Convert to fraction form
    1,412.90/2,119.60 = 591.75/x
  3. Step 3: Cross multiply
    1,412.90x = 2,119.60 × 591.75
  4. Step 4: Simplify right side
    1,412.90x = 1,254,271.82
  5. Step 5: Solve for x
    x = 1,254,271.82/1,412.90
  6. Step 6: Final answer
    x = 887.73

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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.