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Finding the Fourth Proportional to 6,368.90, 8,790.11 and 3,537.18

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Solution

The fourth proportional to 6,368.90, 8,790.11 and 3,537.18 is: 4,881.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,368.90 : 8,790.11 = 3,537.18 : x
  2. Step 2: Convert to fraction form
    6,368.90/8,790.11 = 3,537.18/x
  3. Step 3: Cross multiply
    6,368.90x = 8,790.11 × 3,537.18
  4. Step 4: Simplify right side
    6,368.90x = 31,092,210.13
  5. Step 5: Solve for x
    x = 31,092,210.13/6,368.90
  6. Step 6: Final answer
    x = 4,881.88

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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.