Home / 7,777.18-11,668.81-5,402.14

Finding the Fourth Proportional to 7,777.18, 11,668.81 and 5,402.14

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Solution

The fourth proportional to 7,777.18, 11,668.81 and 5,402.14 is: 8,105.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,777.18 : 11,668.81 = 5,402.14 : x
  2. Step 2: Convert to fraction form
    7,777.18/11,668.81 = 5,402.14/x
  3. Step 3: Cross multiply
    7,777.18x = 11,668.81 × 5,402.14
  4. Step 4: Simplify right side
    7,777.18x = 63,036,545.25
  5. Step 5: Solve for x
    x = 63,036,545.25/7,777.18
  6. Step 6: Final answer
    x = 8,105.32

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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.