Home / 2,877.36-3,970.52-1,618.12

Finding the Fourth Proportional to 2,877.36, 3,970.52 and 1,618.12

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Solution

The fourth proportional to 2,877.36, 3,970.52 and 1,618.12 is: 2,232.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,877.36 : 3,970.52 = 1,618.12 : x
  2. Step 2: Convert to fraction form
    2,877.36/3,970.52 = 1,618.12/x
  3. Step 3: Cross multiply
    2,877.36x = 3,970.52 × 1,618.12
  4. Step 4: Simplify right side
    2,877.36x = 6,424,777.82
  5. Step 5: Solve for x
    x = 6,424,777.82/2,877.36
  6. Step 6: Final answer
    x = 2,232.87

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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.