Home / 7,108.90-10,666.11-2,947.86

Finding the Fourth Proportional to 7,108.90, 10,666.11 and 2,947.86

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Solution

The fourth proportional to 7,108.90, 10,666.11 and 2,947.86 is: 4,422.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,108.90 : 10,666.11 = 2,947.86 : x
  2. Step 2: Convert to fraction form
    7,108.90/10,666.11 = 2,947.86/x
  3. Step 3: Cross multiply
    7,108.90x = 10,666.11 × 2,947.86
  4. Step 4: Simplify right side
    7,108.90x = 31,442,210.08
  5. Step 5: Solve for x
    x = 31,442,210.08/7,108.90
  6. Step 6: Final answer
    x = 4,422.94

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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.