Home / 7,287.06-10,055.42-4,142.64

Finding the Fourth Proportional to 7,287.06, 10,055.42 and 4,142.64

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Solution

The fourth proportional to 7,287.06, 10,055.42 and 4,142.64 is: 5,716.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,287.06 : 10,055.42 = 4,142.64 : x
  2. Step 2: Convert to fraction form
    7,287.06/10,055.42 = 4,142.64/x
  3. Step 3: Cross multiply
    7,287.06x = 10,055.42 × 4,142.64
  4. Step 4: Simplify right side
    7,287.06x = 41,655,985.11
  5. Step 5: Solve for x
    x = 41,655,985.11/7,287.06
  6. Step 6: Final answer
    x = 5,716.43

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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.