Home / 3,688.15-5,089.65-2,196.12

Finding the Fourth Proportional to 3,688.15, 5,089.65 and 2,196.12

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Solution

The fourth proportional to 3,688.15, 5,089.65 and 2,196.12 is: 3,030.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,688.15 : 5,089.65 = 2,196.12 : x
  2. Step 2: Convert to fraction form
    3,688.15/5,089.65 = 2,196.12/x
  3. Step 3: Cross multiply
    3,688.15x = 5,089.65 × 2,196.12
  4. Step 4: Simplify right side
    3,688.15x = 11,177,490.39
  5. Step 5: Solve for x
    x = 11,177,490.39/3,688.15
  6. Step 6: Final answer
    x = 3,030.65

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Half scale
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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.