Home / 3,688.08-5,529.36-1,221.60

Finding the Fourth Proportional to 3,688.08, 5,529.36 and 1,221.60

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Solution

The fourth proportional to 3,688.08, 5,529.36 and 1,221.60 is: 1,831.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,688.08 : 5,529.36 = 1,221.60 : x
  2. Step 2: Convert to fraction form
    3,688.08/5,529.36 = 1,221.60/x
  3. Step 3: Cross multiply
    3,688.08x = 5,529.36 × 1,221.60
  4. Step 4: Simplify right side
    3,688.08x = 6,754,666.18
  5. Step 5: Solve for x
    x = 6,754,666.18/3,688.08
  6. Step 6: Final answer
    x = 1,831.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.