Home / 7,117.98-10,678.92-2,187.54

Finding the Fourth Proportional to 7,117.98, 10,678.92 and 2,187.54

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Solution

The fourth proportional to 7,117.98, 10,678.92 and 2,187.54 is: 3,281.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,117.98 : 10,678.92 = 2,187.54 : x
  2. Step 2: Convert to fraction form
    7,117.98/10,678.92 = 2,187.54/x
  3. Step 3: Cross multiply
    7,117.98x = 10,678.92 × 2,187.54
  4. Step 4: Simplify right side
    7,117.98x = 23,360,564.66
  5. Step 5: Solve for x
    x = 23,360,564.66/7,117.98
  6. Step 6: Final answer
    x = 3,281.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.