Home / 9,120.06-13,686.12-4,189.50

Finding the Fourth Proportional to 9,120.06, 13,686.12 and 4,189.50

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Solution

The fourth proportional to 9,120.06, 13,686.12 and 4,189.50 is: 6,287.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,120.06 : 13,686.12 = 4,189.50 : x
  2. Step 2: Convert to fraction form
    9,120.06/13,686.12 = 4,189.50/x
  3. Step 3: Cross multiply
    9,120.06x = 13,686.12 × 4,189.50
  4. Step 4: Simplify right side
    9,120.06x = 57,337,999.74
  5. Step 5: Solve for x
    x = 57,337,999.74/9,120.06
  6. Step 6: Final answer
    x = 6,287.02

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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.