Home / 2,877.28-3,969.52-1,618.05

Finding the Fourth Proportional to 2,877.28, 3,969.52 and 1,618.05

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Solution

The fourth proportional to 2,877.28, 3,969.52 and 1,618.05 is: 2,232.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,877.28 : 3,969.52 = 1,618.05 : x
  2. Step 2: Convert to fraction form
    2,877.28/3,969.52 = 1,618.05/x
  3. Step 3: Cross multiply
    2,877.28x = 3,969.52 × 1,618.05
  4. Step 4: Simplify right side
    2,877.28x = 6,422,881.84
  5. Step 5: Solve for x
    x = 6,422,881.84/2,877.28
  6. Step 6: Final answer
    x = 2,232.28

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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.