Home / 9,120.12-13,705.83-5,423.01

Finding the Fourth Proportional to 9,120.12, 13,705.83 and 5,423.01

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Solution

The fourth proportional to 9,120.12, 13,705.83 and 5,423.01 is: 8,149.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,120.12 : 13,705.83 = 5,423.01 : x
  2. Step 2: Convert to fraction form
    9,120.12/13,705.83 = 5,423.01/x
  3. Step 3: Cross multiply
    9,120.12x = 13,705.83 × 5,423.01
  4. Step 4: Simplify right side
    9,120.12x = 74,326,853.15
  5. Step 5: Solve for x
    x = 74,326,853.15/9,120.12
  6. Step 6: Final answer
    x = 8,149.77

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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.