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Finding the Fourth Proportional to 6,445.12, 8,895.78 and 4,203.08

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Solution

The fourth proportional to 6,445.12, 8,895.78 and 4,203.08 is: 5,801.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,445.12 : 8,895.78 = 4,203.08 : x
  2. Step 2: Convert to fraction form
    6,445.12/8,895.78 = 4,203.08/x
  3. Step 3: Cross multiply
    6,445.12x = 8,895.78 × 4,203.08
  4. Step 4: Simplify right side
    6,445.12x = 37,389,675.00
  5. Step 5: Solve for x
    x = 37,389,675.00/6,445.12
  6. Step 6: Final answer
    x = 5,801.24

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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.