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Finding the Fourth Proportional to 2,888.79, 3,986.84 and 1,770.48

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Solution

The fourth proportional to 2,888.79, 3,986.84 and 1,770.48 is: 2,443.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,888.79 : 3,986.84 = 1,770.48 : x
  2. Step 2: Convert to fraction form
    2,888.79/3,986.84 = 1,770.48/x
  3. Step 3: Cross multiply
    2,888.79x = 3,986.84 × 1,770.48
  4. Step 4: Simplify right side
    2,888.79x = 7,058,620.48
  5. Step 5: Solve for x
    x = 7,058,620.48/2,888.79
  6. Step 6: Final answer
    x = 2,443.45

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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.