Home / 9,111.51-12,578.67-6,143.04

Finding the Fourth Proportional to 9,111.51, 12,578.67 and 6,143.04

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Solution

The fourth proportional to 9,111.51, 12,578.67 and 6,143.04 is: 8,480.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,111.51 : 12,578.67 = 6,143.04 : x
  2. Step 2: Convert to fraction form
    9,111.51/12,578.67 = 6,143.04/x
  3. Step 3: Cross multiply
    9,111.51x = 12,578.67 × 6,143.04
  4. Step 4: Simplify right side
    9,111.51x = 77,271,272.96
  5. Step 5: Solve for x
    x = 77,271,272.96/9,111.51
  6. Step 6: Final answer
    x = 8,480.62

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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.