Home / 2,877.47-3,970.78-1,618.50

Finding the Fourth Proportional to 2,877.47, 3,970.78 and 1,618.50

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Solution

The fourth proportional to 2,877.47, 3,970.78 and 1,618.50 is: 2,233.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,877.47 : 3,970.78 = 1,618.50 : x
  2. Step 2: Convert to fraction form
    2,877.47/3,970.78 = 1,618.50/x
  3. Step 3: Cross multiply
    2,877.47x = 3,970.78 × 1,618.50
  4. Step 4: Simplify right side
    2,877.47x = 6,426,707.43
  5. Step 5: Solve for x
    x = 6,426,707.43/2,877.47
  6. Step 6: Final answer
    x = 2,233.46

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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.