Home / 6,430.66-8,872.33-4,191.72

Finding the Fourth Proportional to 6,430.66, 8,872.33 and 4,191.72

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Solution

The fourth proportional to 6,430.66, 8,872.33 and 4,191.72 is: 5,783.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,430.66 : 8,872.33 = 4,191.72 : x
  2. Step 2: Convert to fraction form
    6,430.66/8,872.33 = 4,191.72/x
  3. Step 3: Cross multiply
    6,430.66x = 8,872.33 × 4,191.72
  4. Step 4: Simplify right side
    6,430.66x = 37,190,323.11
  5. Step 5: Solve for x
    x = 37,190,323.11/6,430.66
  6. Step 6: Final answer
    x = 5,783.28

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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.