Home / 2,886.98-3,984.39-1,628.10

Finding the Fourth Proportional to 2,886.98, 3,984.39 and 1,628.10

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Solution

The fourth proportional to 2,886.98, 3,984.39 and 1,628.10 is: 2,246.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,886.98 : 3,984.39 = 1,628.10 : x
  2. Step 2: Convert to fraction form
    2,886.98/3,984.39 = 1,628.10/x
  3. Step 3: Cross multiply
    2,886.98x = 3,984.39 × 1,628.10
  4. Step 4: Simplify right side
    2,886.98x = 6,486,985.36
  5. Step 5: Solve for x
    x = 6,486,985.36/2,886.98
  6. Step 6: Final answer
    x = 2,246.98

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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.