Home / 5,187.78-7,153.47-4,109.13

Finding the Fourth Proportional to 5,187.78, 7,153.47 and 4,109.13

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Solution

The fourth proportional to 5,187.78, 7,153.47 and 4,109.13 is: 5,666.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,187.78 : 7,153.47 = 4,109.13 : x
  2. Step 2: Convert to fraction form
    5,187.78/7,153.47 = 4,109.13/x
  3. Step 3: Cross multiply
    5,187.78x = 7,153.47 × 4,109.13
  4. Step 4: Simplify right side
    5,187.78x = 29,394,538.18
  5. Step 5: Solve for x
    x = 29,394,538.18/5,187.78
  6. Step 6: Final answer
    x = 5,666.11

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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.