Home / 1,412.02-2,118.25-438.35

Finding the Fourth Proportional to 1,412.02, 2,118.25 and 438.35

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Solution

The fourth proportional to 1,412.02, 2,118.25 and 438.35 is: 657.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,412.02 : 2,118.25 = 438.35 : x
  2. Step 2: Convert to fraction form
    1,412.02/2,118.25 = 438.35/x
  3. Step 3: Cross multiply
    1,412.02x = 2,118.25 × 438.35
  4. Step 4: Simplify right side
    1,412.02x = 928,524.84
  5. Step 5: Solve for x
    x = 928,524.84/1,412.02
  6. Step 6: Final answer
    x = 657.59

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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.