Home / 3,688.08-5,088.52-2,115.60

Finding the Fourth Proportional to 3,688.08, 5,088.52 and 2,115.60

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Solution

The fourth proportional to 3,688.08, 5,088.52 and 2,115.60 is: 2,918.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,688.08 : 5,088.52 = 2,115.60 : x
  2. Step 2: Convert to fraction form
    3,688.08/5,088.52 = 2,115.60/x
  3. Step 3: Cross multiply
    3,688.08x = 5,088.52 × 2,115.60
  4. Step 4: Simplify right side
    3,688.08x = 10,765,272.91
  5. Step 5: Solve for x
    x = 10,765,272.91/3,688.08
  6. Step 6: Final answer
    x = 2,918.94

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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.