Home / 2,877.42-3,970.80-1,618.38

Finding the Fourth Proportional to 2,877.42, 3,970.80 and 1,618.38

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Solution

The fourth proportional to 2,877.42, 3,970.80 and 1,618.38 is: 2,233.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,877.42 : 3,970.80 = 1,618.38 : x
  2. Step 2: Convert to fraction form
    2,877.42/3,970.80 = 1,618.38/x
  3. Step 3: Cross multiply
    2,877.42x = 3,970.80 × 1,618.38
  4. Step 4: Simplify right side
    2,877.42x = 6,426,263.30
  5. Step 5: Solve for x
    x = 6,426,263.30/2,877.42
  6. Step 6: Final answer
    x = 2,233.34

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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.