Home / 1,412.03-2,118.25-437.91

Finding the Fourth Proportional to 1,412.03, 2,118.25 and 437.91

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Solution

The fourth proportional to 1,412.03, 2,118.25 and 437.91 is: 656.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,412.03 : 2,118.25 = 437.91 : x
  2. Step 2: Convert to fraction form
    1,412.03/2,118.25 = 437.91/x
  3. Step 3: Cross multiply
    1,412.03x = 2,118.25 × 437.91
  4. Step 4: Simplify right side
    1,412.03x = 927,595.46
  5. Step 5: Solve for x
    x = 927,595.46/1,412.03
  6. Step 6: Final answer
    x = 656.92

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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.