Home / 2,875.56-3,968.28-1,616.51

Finding the Fourth Proportional to 2,875.56, 3,968.28 and 1,616.51

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Solution

The fourth proportional to 2,875.56, 3,968.28 and 1,616.51 is: 2,230.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,875.56 : 3,968.28 = 1,616.51 : x
  2. Step 2: Convert to fraction form
    2,875.56/3,968.28 = 1,616.51/x
  3. Step 3: Cross multiply
    2,875.56x = 3,968.28 × 1,616.51
  4. Step 4: Simplify right side
    2,875.56x = 6,414,744.46
  5. Step 5: Solve for x
    x = 6,414,744.46/2,875.56
  6. Step 6: Final answer
    x = 2,230.78

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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.