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Finding the Fourth Proportional to 5,495.78, 8,242.76 and 1,985.11

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Solution

The fourth proportional to 5,495.78, 8,242.76 and 1,985.11 is: 2,977.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,495.78 : 8,242.76 = 1,985.11 : x
  2. Step 2: Convert to fraction form
    5,495.78/8,242.76 = 1,985.11/x
  3. Step 3: Cross multiply
    5,495.78x = 8,242.76 × 1,985.11
  4. Step 4: Simplify right side
    5,495.78x = 16,362,734.16
  5. Step 5: Solve for x
    x = 16,362,734.16/5,495.78
  6. Step 6: Final answer
    x = 2,977.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.