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Finding the Fourth Proportional to 2,888.98, 3,987.15 and 1,630.10

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Solution

The fourth proportional to 2,888.98, 3,987.15 and 1,630.10 is: 2,249.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,888.98 : 3,987.15 = 1,630.10 : x
  2. Step 2: Convert to fraction form
    2,888.98/3,987.15 = 1,630.10/x
  3. Step 3: Cross multiply
    2,888.98x = 3,987.15 × 1,630.10
  4. Step 4: Simplify right side
    2,888.98x = 6,499,453.22
  5. Step 5: Solve for x
    x = 6,499,453.22/2,888.98
  6. Step 6: Final answer
    x = 2,249.74

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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.