Home / 7,387.08-10,180.10-5,287.56

Finding the Fourth Proportional to 7,387.08, 10,180.10 and 5,287.56

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Solution

The fourth proportional to 7,387.08, 10,180.10 and 5,287.56 is: 7,286.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,387.08 : 10,180.10 = 5,287.56 : x
  2. Step 2: Convert to fraction form
    7,387.08/10,180.10 = 5,287.56/x
  3. Step 3: Cross multiply
    7,387.08x = 10,180.10 × 5,287.56
  4. Step 4: Simplify right side
    7,387.08x = 53,827,889.56
  5. Step 5: Solve for x
    x = 53,827,889.56/7,387.08
  6. Step 6: Final answer
    x = 7,286.76

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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.