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Finding the Fourth Proportional to 6,480.32, 8,945.55 and 4,385.66

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Solution

The fourth proportional to 6,480.32, 8,945.55 and 4,385.66 is: 6,054.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,480.32 : 8,945.55 = 4,385.66 : x
  2. Step 2: Convert to fraction form
    6,480.32/8,945.55 = 4,385.66/x
  3. Step 3: Cross multiply
    6,480.32x = 8,945.55 × 4,385.66
  4. Step 4: Simplify right side
    6,480.32x = 39,232,140.81
  5. Step 5: Solve for x
    x = 39,232,140.81/6,480.32
  6. Step 6: Final answer
    x = 6,054.04

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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.