Home / 9,218.19-12,720.69-5,239.67

Finding the Fourth Proportional to 9,218.19, 12,720.69 and 5,239.67

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Solution

The fourth proportional to 9,218.19, 12,720.69 and 5,239.67 is: 7,230.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,218.19 : 12,720.69 = 5,239.67 : x
  2. Step 2: Convert to fraction form
    9,218.19/12,720.69 = 5,239.67/x
  3. Step 3: Cross multiply
    9,218.19x = 12,720.69 × 5,239.67
  4. Step 4: Simplify right side
    9,218.19x = 66,652,154.17
  5. Step 5: Solve for x
    x = 66,652,154.17/9,218.19
  6. Step 6: Final answer
    x = 7,230.50

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Half scale
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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.