Home / 8,921.19-12,302.22-5,382.30

Finding the Fourth Proportional to 8,921.19, 12,302.22 and 5,382.30

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Solution

The fourth proportional to 8,921.19, 12,302.22 and 5,382.30 is: 7,422.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,921.19 : 12,302.22 = 5,382.30 : x
  2. Step 2: Convert to fraction form
    8,921.19/12,302.22 = 5,382.30/x
  3. Step 3: Cross multiply
    8,921.19x = 12,302.22 × 5,382.30
  4. Step 4: Simplify right side
    8,921.19x = 66,214,238.71
  5. Step 5: Solve for x
    x = 66,214,238.71/8,921.19
  6. Step 6: Final answer
    x = 7,422.13

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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.