Home / 3,688.20-5,088.96-2,116.08

Finding the Fourth Proportional to 3,688.20, 5,088.96 and 2,116.08

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Solution

The fourth proportional to 3,688.20, 5,088.96 and 2,116.08 is: 2,919.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,688.20 : 5,088.96 = 2,116.08 : x
  2. Step 2: Convert to fraction form
    3,688.20/5,088.96 = 2,116.08/x
  3. Step 3: Cross multiply
    3,688.20x = 5,088.96 × 2,116.08
  4. Step 4: Simplify right side
    3,688.20x = 10,768,646.48
  5. Step 5: Solve for x
    x = 10,768,646.48/3,688.20
  6. Step 6: Final answer
    x = 2,919.76

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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.