Home / 9,185.28-13,779.69-3,920.20

Finding the Fourth Proportional to 9,185.28, 13,779.69 and 3,920.20

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Solution

The fourth proportional to 9,185.28, 13,779.69 and 3,920.20 is: 5,881.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,185.28 : 13,779.69 = 3,920.20 : x
  2. Step 2: Convert to fraction form
    9,185.28/13,779.69 = 3,920.20/x
  3. Step 3: Cross multiply
    9,185.28x = 13,779.69 × 3,920.20
  4. Step 4: Simplify right side
    9,185.28x = 54,019,140.74
  5. Step 5: Solve for x
    x = 54,019,140.74/9,185.28
  6. Step 6: Final answer
    x = 5,881.06

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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.