Home / 3,688.60-5,090.18-2,116.60

Finding the Fourth Proportional to 3,688.60, 5,090.18 and 2,116.60

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Solution

The fourth proportional to 3,688.60, 5,090.18 and 2,116.60 is: 2,920.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,688.60 : 5,090.18 = 2,116.60 : x
  2. Step 2: Convert to fraction form
    3,688.60/5,090.18 = 2,116.60/x
  3. Step 3: Cross multiply
    3,688.60x = 5,090.18 × 2,116.60
  4. Step 4: Simplify right side
    3,688.60x = 10,773,874.99
  5. Step 5: Solve for x
    x = 10,773,874.99/3,688.60
  6. Step 6: Final answer
    x = 2,920.86

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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.