Home / 7,887.51-10,885.93-5,198.31

Finding the Fourth Proportional to 7,887.51, 10,885.93 and 5,198.31

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Solution

The fourth proportional to 7,887.51, 10,885.93 and 5,198.31 is: 7,174.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,887.51 : 10,885.93 = 5,198.31 : x
  2. Step 2: Convert to fraction form
    7,887.51/10,885.93 = 5,198.31/x
  3. Step 3: Cross multiply
    7,887.51x = 10,885.93 × 5,198.31
  4. Step 4: Simplify right side
    7,887.51x = 56,588,425.78
  5. Step 5: Solve for x
    x = 56,588,425.78/7,887.51
  6. Step 6: Final answer
    x = 7,174.43

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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.