Home / 7,113.78-9,814.23-4,129.07

Finding the Fourth Proportional to 7,113.78, 9,814.23 and 4,129.07

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Solution

The fourth proportional to 7,113.78, 9,814.23 and 4,129.07 is: 5,696.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,113.78 : 9,814.23 = 4,129.07 : x
  2. Step 2: Convert to fraction form
    7,113.78/9,814.23 = 4,129.07/x
  3. Step 3: Cross multiply
    7,113.78x = 9,814.23 × 4,129.07
  4. Step 4: Simplify right side
    7,113.78x = 40,523,593.59
  5. Step 5: Solve for x
    x = 40,523,593.59/7,113.78
  6. Step 6: Final answer
    x = 5,696.49

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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.