Home / 2,173.20-2,999.28-1,427.77

Finding the Fourth Proportional to 2,173.20, 2,999.28 and 1,427.77

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Solution

The fourth proportional to 2,173.20, 2,999.28 and 1,427.77 is: 1,970.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,173.20 : 2,999.28 = 1,427.77 : x
  2. Step 2: Convert to fraction form
    2,173.20/2,999.28 = 1,427.77/x
  3. Step 3: Cross multiply
    2,173.20x = 2,999.28 × 1,427.77
  4. Step 4: Simplify right side
    2,173.20x = 4,282,282.01
  5. Step 5: Solve for x
    x = 4,282,282.01/2,173.20
  6. Step 6: Final answer
    x = 1,970.50

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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.