Home / 8,156.45-11,255.90-4,430.45

Finding the Fourth Proportional to 8,156.45, 11,255.90 and 4,430.45

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Solution

The fourth proportional to 8,156.45, 11,255.90 and 4,430.45 is: 6,114.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,156.45 : 11,255.90 = 4,430.45 : x
  2. Step 2: Convert to fraction form
    8,156.45/11,255.90 = 4,430.45/x
  3. Step 3: Cross multiply
    8,156.45x = 11,255.90 × 4,430.45
  4. Step 4: Simplify right side
    8,156.45x = 49,868,623.72
  5. Step 5: Solve for x
    x = 49,868,623.72/8,156.45
  6. Step 6: Final answer
    x = 6,114.01

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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.