Home / 9,411.13-12,987.38-5,219.38

Finding the Fourth Proportional to 9,411.13, 12,987.38 and 5,219.38

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Solution

The fourth proportional to 9,411.13, 12,987.38 and 5,219.38 is: 7,202.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,411.13 : 12,987.38 = 5,219.38 : x
  2. Step 2: Convert to fraction form
    9,411.13/12,987.38 = 5,219.38/x
  3. Step 3: Cross multiply
    9,411.13x = 12,987.38 × 5,219.38
  4. Step 4: Simplify right side
    9,411.13x = 67,785,980.39
  5. Step 5: Solve for x
    x = 67,785,980.39/9,411.13
  6. Step 6: Final answer
    x = 7,202.75

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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.