Home / 9,172.48-12,629.66-7,164

Finding the Fourth Proportional to 9,172.48, 12,629.66 and 7,164

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Solution

The fourth proportional to 9,172.48, 12,629.66 and 7,164 is: 9,864.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,172.48 : 12,629.66 = 7,164 : x
  2. Step 2: Convert to fraction form
    9,172.48/12,629.66 = 7,164/x
  3. Step 3: Cross multiply
    9,172.48x = 12,629.66 × 7,164
  4. Step 4: Simplify right side
    9,172.48x = 90,478,884.24
  5. Step 5: Solve for x
    x = 90,478,884.24/9,172.48
  6. Step 6: Final answer
    x = 9,864.17

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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.