Home / 9,321.38-13,985.15-3,779.39

Finding the Fourth Proportional to 9,321.38, 13,985.15 and 3,779.39

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Solution

The fourth proportional to 9,321.38, 13,985.15 and 3,779.39 is: 5,670.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,321.38 : 13,985.15 = 3,779.39 : x
  2. Step 2: Convert to fraction form
    9,321.38/13,985.15 = 3,779.39/x
  3. Step 3: Cross multiply
    9,321.38x = 13,985.15 × 3,779.39
  4. Step 4: Simplify right side
    9,321.38x = 52,855,247.24
  5. Step 5: Solve for x
    x = 52,855,247.24/9,321.38
  6. Step 6: Final answer
    x = 5,670.32

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1.5x scale

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.