Home / 9,192.64-12,683.76-5,212.80

Finding the Fourth Proportional to 9,192.64, 12,683.76 and 5,212.80

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Solution

The fourth proportional to 9,192.64, 12,683.76 and 5,212.80 is: 7,192.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,192.64 : 12,683.76 = 5,212.80 : x
  2. Step 2: Convert to fraction form
    9,192.64/12,683.76 = 5,212.80/x
  3. Step 3: Cross multiply
    9,192.64x = 12,683.76 × 5,212.80
  4. Step 4: Simplify right side
    9,192.64x = 66,117,904.13
  5. Step 5: Solve for x
    x = 66,117,904.13/9,192.64
  6. Step 6: Final answer
    x = 7,192.48

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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.