Home / 7,111.18-10,663.66-3,778.70

Finding the Fourth Proportional to 7,111.18, 10,663.66 and 3,778.70

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Solution

The fourth proportional to 7,111.18, 10,663.66 and 3,778.70 is: 5,666.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,111.18 : 10,663.66 = 3,778.70 : x
  2. Step 2: Convert to fraction form
    7,111.18/10,663.66 = 3,778.70/x
  3. Step 3: Cross multiply
    7,111.18x = 10,663.66 × 3,778.70
  4. Step 4: Simplify right side
    7,111.18x = 40,294,753.15
  5. Step 5: Solve for x
    x = 40,294,753.15/7,111.18
  6. Step 6: Final answer
    x = 5,666.40

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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.