Home / 3,688.19-5,090.12-2,196.11

Finding the Fourth Proportional to 3,688.19, 5,090.12 and 2,196.11

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Solution

The fourth proportional to 3,688.19, 5,090.12 and 2,196.11 is: 3,030.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,688.19 : 5,090.12 = 2,196.11 : x
  2. Step 2: Convert to fraction form
    3,688.19/5,090.12 = 2,196.11/x
  3. Step 3: Cross multiply
    3,688.19x = 5,090.12 × 2,196.11
  4. Step 4: Simplify right side
    3,688.19x = 11,178,427.00
  5. Step 5: Solve for x
    x = 11,178,427.00/3,688.19
  6. Step 6: Final answer
    x = 3,030.87

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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.