Home / 9,187.27-12,678.58-5,208.30

Finding the Fourth Proportional to 9,187.27, 12,678.58 and 5,208.30

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Solution

The fourth proportional to 9,187.27, 12,678.58 and 5,208.30 is: 7,187.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,187.27 : 12,678.58 = 5,208.30 : x
  2. Step 2: Convert to fraction form
    9,187.27/12,678.58 = 5,208.30/x
  3. Step 3: Cross multiply
    9,187.27x = 12,678.58 × 5,208.30
  4. Step 4: Simplify right side
    9,187.27x = 66,033,854.72
  5. Step 5: Solve for x
    x = 66,033,854.72/9,187.27
  6. Step 6: Final answer
    x = 7,187.54

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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.