Home / 5,090.78-7,636.93-1,581.14

Finding the Fourth Proportional to 5,090.78, 7,636.93 and 1,581.14

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Solution

The fourth proportional to 5,090.78, 7,636.93 and 1,581.14 is: 2,371.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,090.78 : 7,636.93 = 1,581.14 : x
  2. Step 2: Convert to fraction form
    5,090.78/7,636.93 = 1,581.14/x
  3. Step 3: Cross multiply
    5,090.78x = 7,636.93 × 1,581.14
  4. Step 4: Simplify right side
    5,090.78x = 12,075,070.64
  5. Step 5: Solve for x
    x = 12,075,070.64/5,090.78
  6. Step 6: Final answer
    x = 2,371.95

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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.