Home / 9,186.86-13,779.56-2,945.21

Finding the Fourth Proportional to 9,186.86, 13,779.56 and 2,945.21

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Solution

The fourth proportional to 9,186.86, 13,779.56 and 2,945.21 is: 4,417.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,186.86 : 13,779.56 = 2,945.21 : x
  2. Step 2: Convert to fraction form
    9,186.86/13,779.56 = 2,945.21/x
  3. Step 3: Cross multiply
    9,186.86x = 13,779.56 × 2,945.21
  4. Step 4: Simplify right side
    9,186.86x = 40,583,614.28
  5. Step 5: Solve for x
    x = 40,583,614.28/9,186.86
  6. Step 6: Final answer
    x = 4,417.57

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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.