Home / 1,485.16-2,221.02-1,277.80

Finding the Fourth Proportional to 1,485.16, 2,221.02 and 1,277.80

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Solution

The fourth proportional to 1,485.16, 2,221.02 and 1,277.80 is: 1,910.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,485.16 : 2,221.02 = 1,277.80 : x
  2. Step 2: Convert to fraction form
    1,485.16/2,221.02 = 1,277.80/x
  3. Step 3: Cross multiply
    1,485.16x = 2,221.02 × 1,277.80
  4. Step 4: Simplify right side
    1,485.16x = 2,838,019.36
  5. Step 5: Solve for x
    x = 2,838,019.36/1,485.16
  6. Step 6: Final answer
    x = 1,910.92

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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.