Home / 9,003.90-12,420.39-5,277.18

Finding the Fourth Proportional to 9,003.90, 12,420.39 and 5,277.18

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Solution

The fourth proportional to 9,003.90, 12,420.39 and 5,277.18 is: 7,279.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,003.90 : 12,420.39 = 5,277.18 : x
  2. Step 2: Convert to fraction form
    9,003.90/12,420.39 = 5,277.18/x
  3. Step 3: Cross multiply
    9,003.90x = 12,420.39 × 5,277.18
  4. Step 4: Simplify right side
    9,003.90x = 65,544,633.70
  5. Step 5: Solve for x
    x = 65,544,633.70/9,003.90
  6. Step 6: Final answer
    x = 7,279.58

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.