Home / 5,356.40-8,034.01-1,408.05

Finding the Fourth Proportional to 5,356.40, 8,034.01 and 1,408.05

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Solution

The fourth proportional to 5,356.40, 8,034.01 and 1,408.05 is: 2,111.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,356.40 : 8,034.01 = 1,408.05 : x
  2. Step 2: Convert to fraction form
    5,356.40/8,034.01 = 1,408.05/x
  3. Step 3: Cross multiply
    5,356.40x = 8,034.01 × 1,408.05
  4. Step 4: Simplify right side
    5,356.40x = 11,312,284.26
  5. Step 5: Solve for x
    x = 11,312,284.26/5,356.40
  6. Step 6: Final answer
    x = 2,111.92

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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.