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Finding the Fourth Proportional to 6,430.54, 8,875.10 and 4,072.90

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Solution

The fourth proportional to 6,430.54, 8,875.10 and 4,072.90 is: 5,621.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,430.54 : 8,875.10 = 4,072.90 : x
  2. Step 2: Convert to fraction form
    6,430.54/8,875.10 = 4,072.90/x
  3. Step 3: Cross multiply
    6,430.54x = 8,875.10 × 4,072.90
  4. Step 4: Simplify right side
    6,430.54x = 36,147,394.79
  5. Step 5: Solve for x
    x = 36,147,394.79/6,430.54
  6. Step 6: Final answer
    x = 5,621.21

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.